Apps missing from portal.office.com

Title: Some users may be unable to view or access Microsoft 365 apps or services

User impact: Users may have been unable to view or access Microsoft 365 apps or services.

More info: Impacted services included but were not limited to:
- Microsoft 365 web apps - Users may have been unable to access Microsoft 365 web apps, such as Excel for the web. Additionally, the search bar may not have appeared in any Office for the web service.
- Outlook on the web - Users may have experienced slowness or latency when accessing or using the service.
- Microsoft Teams - Admins may have been unable to access the Microsoft Teams admin center. Users may have been unable to launch the Developer Portal.
- SharePoint Online - Users may have been unable to view the settings gear, search bar, and waffle.
- Microsoft Planner - Users may have been unable to access Microsoft 365 web apps through Microsoft Planner.
- Microsoft Yammer - Users may have been unable to view the search bar.
- Project for the web - Users may have been unable to view the waffle menu, settings, and help content.
- Microsoft Power Apps - Users may have been unable to access Power Apps from the Office.com app launcher.

While the Microsoft 365 apps may not have rendered, users could have accessed the applications directly through URL. Some examples of these included:
Microsoft 365 admin center - admin.microsoft.com
Microsoft Teams - teams.microsoft.com
Outlook for the web - outlook.office.com
Microsoft Power Apps - make.powerapps.com
Word for the web - microsoft365.com/launch/word
Excel for the web - microsoft365.com/launch/excel

Final status: After extended monitoring and receiving confirmation from previously affected users, we've validated that adding further processing throughput successfully resolved the issue.

Scope of impact: Impact was specific to some users who were served through the affected infrastructure. The majority of reported impact stemmed from users located in North and South America.

Start time: Thursday, April 20, 2023, 7:38 AM (12:38 PM UTC)

End time: Thursday, April 20, 2023, 1:50 PM (6:50 PM UTC)

Preliminary root cause: High resource utilization on the infrastructure which supports the affected services resulted in the end-user impact.

Next steps:
- We're continuing to investigate the underlying cause of the high resource utilization which led to the impact.
- We're monitoring service telemetry to ensure impact doesn't recur.

Our telemetry is showing service improvement as the process to add further processing throughput completes. We're monitoring to confirm whether this successfully resolves the issue or if additional action is required.

This quick update is designed to give the latest information on this issue.

In addition to the ongoing update reversion and root cause investigation, we're also in the process of adding further processing throughput within the environment in an attempt to provide relief.

This quick update is designed to give the latest information on this issue.

Title: Some users may be unable to view or access Microsoft 365 apps or services

User impact: Some users may be unable to view or access Microsoft 365 apps or services

More info: Impacted services may include, but are not limited to:
- Microsoft 365 Online apps - Users may be unable to access Microsoft 365 web apps, such as Excel Online. Additionally, the search bar may not appear in any Office Online service.
- Microsoft Teams - Users may be unable to access the Microsoft Teams admin center.
- SharePoint Online - Users may be unable to view the settings gear, search bar and waffle.
- Microsoft Planner - Users may be unable to access Microsoft 365 web apps through Microsoft Planner.
- Yammer - The search bar is missing from the User Interface.
- Outlook on the web - Users may experience slowness or latency when accessing or using the service.
Microsoft Project for the Web - Users may be unable to view the waffle menu, settings, and help content.

Whilst the Microsoft 365 apps may not render, users can still access the applications directly through the URL. Some examples of these include:
Microsoft 365 Admin Center - admin.microsoft.com
Outlook - outlook.office.com
Microsoft Teams - teams.microsoft.com
Word Online - microsoft365.com/launch/word
Excel Online - microsoft365.com/launch/excel

Current status: We're focusing our investigation on high CPU utilization utilization that is occurring on the components which facilitate the back-end API calls for the navigation headers and features. We’re changing some specific configurations which were part of a service update that occurred on Monday, April 17, 2023, to see if this provides relief whilst we continue to investigate the source of the high CPU utilization.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure. The majority of reported impact is coming from users located in North and South America.

Start time: Wednesday, April 19, 2023, 7:38 PM (4/20/2023, 12:38 AM UTC)

Preliminary Root cause: A section of caching infrastructure is performing below acceptable performance thresholds, causing some service calls to bypass the cache and go directly to Azure Active Directory infrastructure resulting in high resource utilization and subsequent impact.

Next update: Thursday, April 20, 2023, 1:00 PM (6:00 PM UTC)

The majority of reported impact is coming from North and South America. We continue to review diagnostic logs from caching infrastructure to isolate the source of the issue.

Whilst the Microsoft 365 apps may not render, users can still access the applications directly through the URL. Some examples of these include:
Microsoft 365 Admin Center - portal.office.com
Outlook - outlook.office.com
Microsoft Teams - teams.microsoft.com
Word Online - microsoft365.com/launch/word
Excel Online - microsoft365.com/launch/excel

This quick update is designed to give the latest information on this issue.

Title: Some users may be unable to view or access web apps in Microsoft 365 or access the Microsoft Teams admin center

User impact: Users may be unable to view or access web apps in Microsoft 365.

More info: Users may also be unable to access Microsoft 365 web apps through Microsoft Planner. Additionally, users may be unable to access the Microsoft Teams admin center.

Current status: Analysis of diagnostic data has identified an unusually high number of timeout exceptions within our caching and Azure Active Directory (AAD) infrastructure. We’re working to isolate the cause of these exceptions whilst identifying steps to remediate impact.

Scope of impact: Impact is specific to some users who were served through the affected infrastructure attempting to view or access web apps in Microsoft 365.

Start time: Wednesday, April 19, 2023, 7:38 PM (4/20/2023, 12:38 AM UTC)

Root cause: A section of caching infrastructure is performing below acceptable performance thresholds.

Next update: Thursday, April 20, 2023, 10:30 AM (3:30 PM UTC)

Title: Some users may be intermittently unable to view or access web apps in Microsoft 365

User impact: Users may be intermittently unable to view or access web apps in Microsoft 365.

Current status: We're reviewing service monitoring telemetry to isolate the root cause and develop a remediation plan.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Next update by: Thursday, April 20, 2023, 10:30 AM (3:30 PM UTC)

We are receiving reports of apps missing within portal.office.com. We do apologize for this inconvenience and will post updates to status as we have them from Microsoft.