Key Takeaways
1. Microsoft acknowledged an issue with certain PCs after the March 2026 Windows 11 cumulative update KB5079473, affecting Microsoft account sign-ins across various apps.
2. The problem is identified in Windows 11 versions 24H2 and 25H2, specifically OS Builds 26100.8037 and 26200.8037, released on March 10, 2026.
3. Users may encounter error messages suggesting they need internet access, even when connected, during sign-in attempts for apps like Microsoft Teams, OneDrive, and Word.
4. The issue is limited to Microsoft account sign-ins, and organizations using Entra ID for app authentication are not affected.
5. As a temporary workaround, Microsoft recommends restarting devices while connected to the internet to restore connectivity and avoid recurring issues.
Microsoft has acknowledged a new issue impacting certain PCs following the March 2026 Windows 11 cumulative update KB5079473. The company stated that some users might face difficulties logging in with a Microsoft account across various apps after the update is applied. The support documentation from Microsoft identifies KB5079473 for Windows 11 versions 24H2 and 25H2 as OS Builds 26100.8037 and 26200.8037, which were issued on March 10, 2026.
Update on the Issue
On March 20, 2026, various media outlets reported that Microsoft updated its Windows release health information to recognize the problem. The reports indicate that this issue can affect applications like Microsoft Teams Free, OneDrive, Microsoft Edge, Excel, Word, and Microsoft 365 Copilot whenever they require a Microsoft account for signing in.
Error Messages and Connectivity Problems
According to Microsoft, devices that are impacted might display an error message indicating that internet access is needed, even if the PC is already connected. External sources have quoted Microsoft explaining that sign-in attempts may show messages resembling: “You’ll need the Internet for this. It doesn’t look like you’re connected to the Internet.” Furthermore, it seems the issue is associated with a specific network connectivity condition activated after the update was installed.
Microsoft clarifies that this issue is confined to sign-in actions involving Microsoft accounts only. The same release health update mentioned by outside media states that organizations utilizing Entra ID for app authentication are not experiencing this particular issue.
Suggested Workaround
While a permanent solution is being developed, Microsoft has advised affected users to restart their devices while connected to the internet. The company asserts that this can restore the connectivity state and help stop the issue from happening again. However, Microsoft cautions that restarting without an active internet connection may lead the device back to the same problematic state.
KB5079473 was rolled out as part of Microsoft’s March Patch Tuesday for supported Windows 11 versions. Microsoft’s support documents verify the update and build numbers, and the newly recognized sign-in issue adds to an increasing number of complaints following this month’s release.
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