Microsoft 365 Outage History

99 incidents recorded over the last 365 days, 99 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live Microsoft 365 status99.13% uptime history

Every Recorded Microsoft 365 Incident

Microsoft 365 incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Jul 29, 2026Users may be unable to send messages after a recipient of a new chat accepts the requestUser impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We’ve made changes to improve background processing and confirmed through internal monitoring that the impacted scenario…139h 55mResolved
Jul 29, 2026Users may be unable to send messages after a recipient of a new chat accepts the requestUser impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: Current status: We’ve made changes to improve background processing and confirmed through internal monitoring that the…139h 59mResolved
Jul 28, 2026Users may be unable to send messages after a recipient of a new chat accepts the requestUser impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: Our review of the scenario telemetry logs is taking longer than anticipated, but we're continuing to make progress in…143h 21mResolved
Jul 28, 2026Users may be unable to send messages after a recipient of a new chat accepts the requestUser impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We've identified that the process which should occur when a user accepts a new chat isn't trigger as expected. We're…145h 33mResolved
Jul 28, 2026Users may be unable to send messages after a recipient of a new chat accepts the requestUser impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We're reviewing scenario telemetry logs to determine why users may be unable to send messages after a recipient of a new…146h 45mResolved
Jul 8, 2026Users can't build or edit agents within Microsoft 365 CopilotUser impact: Users are unable to build or edit agents within Microsoft Copilot. Final status: The investigation is complete and we've determined the service is healthy. A service incident didn't actually occur. This…0 minResolved
Jul 8, 2026Users can't build or edit agents within Microsoft 365 CopilotUser impact: Users are unable to build or edit agents within Microsoft Copilot. Final status: The investigation is complete and we've determined the service is healthy. A service incident didn't actually occur. This…0 minResolved
Jun 27, 2026Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devicesUser impact: Users may have been unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices. Final status: We’ve successfully reverted the offending change and confirmed with service…0 minResolved
Jun 27, 2026Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devicesUser impact: Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices. Current status: We've determined that this issue is due to a recent change that included a reference to…906h 51mResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may have been unable to access the Copilot desktop or web app. Final status: We've rerouted requests to healthy infrastructure and have confirmed through our telemetry that service health has…0 minResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may have been unable to access the Copilot desktop or web app. Final status: We've rerouted requests to healthy infrastructure and have confirmed through our telemetry that service health has…0 minResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may be unable to access the Copilot desktop or web app. Current status: We identified a routing issue which is sending Copilot traffic to a portion of infrastructure that is unhealthy, resulting in…1514h 30mResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may be unable to access the Copilot desktop or web app. Current status: We've received logs from impacted users and are reviewing them to identify the root cause. We're also continuing to monitor…1515h 14mResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may be unable to access the Copilot desktop or web app. Current status: We're working on getting logs from impacted users to focus our investigative efforts to isolate the source of…1515h 27mResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may be unable to access the Microsoft Copilot desktop or web app. Current status: We’re reviewing our telemetry to determine the specific impact and isolate the root cause. Next update by…1515h 55mResolved
Jun 1, 2026Users may be unable to access the Microsoft Copilot desktop or web appUser impact: Users may be unable to access the Microsoft Copilot desktop or web app. Current status: We’re reviewing our telemetry to determine the specific impact and isolate the root cause. Next update by…1516h 7mResolved
Jun 1, 2026Investigating user reports of Microsoft 365 Copilot issuesUser impact: We don't have details on impact yet. We're seeing an increase in user reported issues above our alerting threshold. Current status: We are reviewing service telemetry and available information to determine…1516h 8mResolved
Jun 1, 2026Investigating user reports of Microsoft 365 Copilot issuesUser impact: We don't have details on impact yet. We're seeing an increase in user reported issues above our alerting threshold. Current status: We are reviewing service telemetry and available information to determine…1516h 41mResolved
May 30, 2026Users may be unable to use Microsoft CopilotUser impact: Users were unable to use Microsoft Copilot. Final status: The underlying infrastructure that the Copilot LLM APIs use has recovered after the mitigation actions were applied. We monitored the environment…0 minResolved
May 29, 2026Users may be unable to use Microsoft CopilotUser impact: Users were unable to use Microsoft Copilot. Final status: The underlying infrastructure that the Copilot LLM APIs use has recovered after the mitigation actions were applied. We monitored the environment…0 minResolved
May 29, 2026Users may be unable to use Microsoft CopilotUser impact: Users may be unable to use Microsoft Copilot. Current status: We've identified high utilization on the underlying infrastructure that the Copilot LLM APIs use and are applying mitigations. Additionally, at…1586h 59mResolved
May 29, 2026Users may be unable to use Microsoft CopilotUser impact: Users may be unable to use Microsoft Copilot. Current status: We're reviewing service telemetry to isolate the source of the issue. Next update by: Friday, May 29, 2026, at 5:30 PM UTC1588h 10mResolved
May 20, 2026Some users may be unable to search, chat, or call users in Microsoft Teams FreeUser impact: Users may have been unable to search, chat, or call users in Microsoft Teams Free. Final status: We've determined that a recent service update introduced the problem for the Microsoft Teams Free new user…0 minResolved
May 20, 2026Some users may be unable to search, chat, or call users in Microsoft Teams FreeUser impact: Users may have been unable to search, chat, or call users in Microsoft Teams Free. Final status: We've determined that a recent service update introduced the problem for the Microsoft Teams Free new user…0 minResolved
May 20, 2026Some users are unable to search, chat, or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat, or call users in Microsoft Teams Free. Current status: We're monitoring our fix deployment to ensure it has saturated throughout the entire affected environment before…1804h 40mResolved
May 14, 2026Some users may see failures when accessing Microsoft CopilotUser impact: Users may have seen failures when accessing Microsoft Copilot. More info: Users may be presented with a 401-error response code. Final status: We've completed a deployment to roll back to the most recent…0 minResolved
May 14, 2026Some users may see failures when accessing Microsoft CopilotUser impact: Users may have seen failures when accessing Microsoft Copilot. More info: Users may be presented with a 401-error response code. Final status: We've completed a deployment to roll back to the most…0 minResolved
May 14, 2026Some users may see failures when accessing Microsoft CopilotUser impact: Users may see failures when accessing Microsoft Copilot More info: Users may be presented with a 401-error response code. Current status: We're investigating a potential issue with Microsoft Copilot…1946h 51mResolved
May 13, 2026Some users are unable to search, chat, or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat, or call users in Microsoft Teams Free. Current status: We've completed validations of our fix within our internal testing environment and have initiated a gradual…1972h 30mResolved
May 13, 2026Some users are unable to search, chat, or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat, or call users in Microsoft Teams Free. Current status: We've completed validations of our fix within our internal testing environment and have initiated a gradual…1972h 45mResolved
May 11, 2026We're looking into a potential problem impacting Microsoft 365 CopilotUser impact: We're checking for potential impact to your users. Final status: The investigation is complete and we've determined the service is healthy. A service incident didn't actually occur. This communication has…0 minResolved
May 11, 2026We're looking into a potential problem impacting Microsoft 365 CopilotUser impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue impacting Microsoft 365 Copilot and checking for impact to your organization. We'll provide an…2015h 25mResolved
May 8, 2026iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS, iPadOS, and iPad users may have experienced issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app worked as expected. However, if…0 minResolved
May 6, 2026iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected…2139h 0mResolved
May 6, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. Current status: We're validating a fix to address the underlying issue. Due to the complexity of the deployment, the validation is…2141h 23mResolved
May 6, 2026Some users may be unable to select "Allow editing" when using Microsoft 365 Copilot through Word or ExcelUser impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may have been unable to click on the drop-down menu to select "Allow editing" and may have…0 minResolved
May 6, 2026Some users may be unable to select "Allow editing" when using Microsoft 365 Copilot through Word or ExcelUser impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may have been unable to click on the drop-down menu to select "Allow editing" and may have…0 minResolved
May 5, 2026Some users may be unable to select "Allow editing" when using Microsoft 365 Copilot through Word or ExcelUser impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may be unable to click on the drop-down menu to select "Allow editing" and may only be…2162h 19mResolved
May 5, 2026Some users may be unable to select "Allow editing" when using Microsoft 365 Copilot through Word or ExcelUser impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may be unable to click on the drop-down menu to select "Allow editing" and may only be…2162h 28mResolved
May 5, 2026Some users may be unable to select "Allow editing" when using Microsoft 365 Copilot through Word or ExcelUser impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may be unable to click on the drop-down menu to select "Allow editing" and may only be…2163h 1mResolved
May 5, 2026We're looking into a potential problem impacting Microsoft 365 CopilotUser impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue with Microsoft 365 Copilot and checking for impact to your organization. We'll provide an update…2163h 16mResolved
May 5, 2026We're looking into a potential problem impacting Microsoft 365 CopilotUser impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue with Microsoft 365 Copilot and checking for impact to your organization. We'll provide an update…2163h 38mResolved
May 4, 2026iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected…2186h 56mResolved
May 1, 2026iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected…2259h 31mResolved
Apr 30, 2026iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected…2282h 27mResolved
Apr 30, 2026iOS and iPadOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS and iPadOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if…2299h 29mResolved
Apr 29, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is…2300h 5mResolved
Apr 29, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is…2301h 44mResolved
Apr 29, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is…2302h 46mResolved
Apr 29, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is…2302h 55mResolved
Apr 29, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding…2307h 32mResolved
Apr 29, 2026Users may experience issues accessing or using Microsoft CopilotUser impact: Affected users may have been unable to use Copilot services and features. More info: Prompts to Copilot may have returned an error message stating "Oops, Something happened. Can you try again?" Final…0 minResolved
Apr 29, 2026Users may experience issues accessing or using Microsoft CopilotUser impact: Affected users may have been unable to use Copilot services and features. More info: Prompts to Copilot may have returned an error message stating "Oops, Something happened. Can you try again?" Final…0 minResolved
Apr 29, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding…2310h 16mResolved
Apr 29, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re continuing to closely monitor service telemetry which continues to show the mitigation actions have been…2311h 14mResolved
Apr 29, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. More Info: If you are still impacted, we recommend the following steps outlined below to sign-in again on iOS devices: 1. Open the…2316h 23mResolved
Apr 29, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding…2317h 55mResolved
Apr 29, 2026Users may experience issues accessing Outlook.com in the iOS mail appUser impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. More Info: If you are still impacted, we recommend the following steps outlined below to sign-in again on iOS…2320h 1mResolved
Apr 29, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re continuing to implement further optimizations for the outlook.com iOS sign-in experience to help address reports of…2322h 35mResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also…2324h 24mResolved
Apr 28, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their…0 minResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also…2325h 27mResolved
Apr 28, 2026We're looking into a potential problem impacting Microsoft 365 Copilot chatUser impact: We're checking for potential impact to your users. Final status: The investigation is complete and we've determined the service is healthy. A service incident didn't actually occur. This communication has…0 minResolved
Apr 28, 2026We're looking into a potential problem impacting Microsoft 365 Copilot chatUser impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide…2326h 14mResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're performing some changes to optimize the outlook.com iOS sign-in experience and, once complete, we'll provide…2330h 49mResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’ve received reports that impact associated with OL1292958 persists. We've resumed our investigation of the issue and…2332h 1mResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’ve received reports that impact associated with OL1292958 persists. We've resumed our investigation of the issue and…2332h 9mResolved
Apr 28, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding…2333h 29mResolved
Apr 28, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’ve received reports that impact associated with OL1292958 persists. We've resumed our investigation of the issue and…2333h 39mResolved
Apr 28, 2026Some users are unable to search, chat or call users in Microsoft Teams FreeUser impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding…2333h 48mResolved
Apr 27, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their…2349h 14mResolved
Apr 27, 2026iOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail appUser impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their…2350h 3mResolved
Apr 27, 2026iOS users may experience issues accessing Outlook.comUser impact: iOS users may experience issues accessing Outlook.com. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: -Open the Settings app on your…2350h 32mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: -Open the Settings…2351h 0mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: -Open the Settings…2351h 2mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Impacted…2352h 7mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs…2352h 35mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2353h 9mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2354h 35mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2355h 12mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2355h 41mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2356h 31mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2357h 0mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected…2357h 38mResolved
Apr 27, 2026Users may experience issues accessing Outlook.comUser impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs.  Current…2357h 53mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs.  Current…2358h 23mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs.  Current…2358h 43mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current…2359h 11mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current…2359h 37mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Some users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs…2360h 0mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Some users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs…2360h 33mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re analyzing service telemetry and investigating reported behavior to determine scope and next steps. Next update by…2361h 16mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re analyzing service telemetry and investigating reported behavior to determine scope and next steps. Next update by…2361h 22mResolved
Apr 27, 2026Users may experience issues accessing Outlook.com.User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re analysing service telemetry and investigating reported behaviour to determine scope and next steps. Next update…2361h 45mResolved
Apr 27, 2026We're looking into a potential problem with users accessing Outlook.comUser impact: We're checking for potential impact. Current status: We're investigating a potential issue affecting access to Outlook.com, and we'll provide an update within 30 minutes.2362h 2mResolved
Apr 27, 2026We're looking into a potential problem with users accessing Outlook.comUser impact: We're checking for potential impact. We're investigating a potential issue affecting access to Outlook.com, and we'll provide an update within 30 minutes.2362h 14mResolved
Apr 24, 2026Users may see intermittent issues with the Microsoft Copilot serviceUser impact: Users may have seen intermittent issues with the Microsoft Copilot service. More info: Affected users may have seen the following error messages: "Having trouble with requests" "I'm sorry, I'm having…0 minResolved
Apr 24, 2026Users may see intermittent issues with the Microsoft Copilot serviceUser impact: Users may see intermittent issues with the Microsoft Copilot service. More info: Affected users may see the following error messages: "Having trouble with requests" "I'm sorry, I'm having trouble…2441h 8mResolved
Apr 24, 2026Users may see intermittent issues with the Microsoft Copilot serviceUser impact: Users may see intermittent issues with the Microsoft Copilot service. More info: Affected users may see the following error messages: "Having trouble with requests" "I'm sorry, I'm having trouble…2441h 36mResolved

How to Read This Microsoft 365 Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Microsoft 365 acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single Microsoft 365 outage in this window ran 101d 17h, against a mean recovery of 68d 2h. If you depend on Microsoft 365 in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.