The Update BureauKB5085516: Cumulative update for Windows 11, versions 24H2 and 25H2, March 2026. Microsoft account sign-ins recover from false “no Internet” errors
Fixes sign-in failures for Microsoft account users after the March 10 update. Devices enrolled in Hotpatch receive the fix through KB5085518 without a restart.
Does it affect you? Applies to: Devices running Windows 11, versions 25H2 or 24H2. The sign-in issue affects users signing in with Microsoft accounts; businesses using Microsoft Entra ID for app authentication are not affected. The AI component updates apply only to Copilot+ PCs.
Review notes Additional details from the official release notes (1) Read note
- In short The sign-in issue can affect some users after installing a Windows update released on or after March 10, 2026.
The official sources are linked at the end of the page.
What changes
Improvements 2 changes
AI Components
For: Copilot+ PC users
-
AI components receive updates on Copilot+ PCs.1
Image Search, Content Extraction, and Semantic Analysis are updated to version 1.2602.1451.0. These components apply only to Windows Copilot+ PCs.
Servicing stack
-
The component that installs Windows updates receives quality improvements to help devices receive and install updates reliably.2
Includes servicing stack update KB5083532, build 26100.8035.
Fix 1 change
Microsoft account sign in
For: Microsoft account users
-
Some users can sign in to apps with a Microsoft account again instead of seeing a “no Internet” error despite having a working internet connection.3
Only Microsoft account sign-ins are affected; businesses using Microsoft Entra ID for app authentication are not affected. On devices enrolled in Hotpatch, KB5085518 provides this fix without requiring a restart.
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2026-03-21
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
-
KB5079473, KB5077241, KB5077181, KB5074105
+45 earlier
KB5078127, KB5077744, KB5074109, KB5072033, KB5070311, KB5068861, KB5067036, KB5070773, KB5066835, KB5065789, KB5068221, KB5065426, KB5064081, KB5063878, KB5062660, KB5064489, KB5062553, KB5060829, KB5063060, KB5060842, KB5058499, KB5061977, KB5058411, KB5055627, KB5059087, KB5055523, KB5053656, KB5053598, KB5052093, KB5051987, KB5050094, KB5050009, KB5048667, KB5046740, KB5046617, KB5044384, KB5044284, KB5043178, KB5043080, KB5041865, KB5041571, KB5040529, KB5040435, KB5039304, KB5039239 - Replaced by
- KB5086672
| Version | Build | Channel |
|---|---|---|
| 24H2 | 26100.8039 | General availability |
| 25H2 | 26200.8039 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
80 files changed since the previous update for the same versions.
Sources
Cited passages from Microsoft's official notes (3)
-
1.
This release updates the following AI components:
support.microsoft.com -
2.
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
support.microsoft.com -
3.
Even when the device has a working Internet connection, a “no Internet” error appears during sign in and prevents access to Microsoft services and apps such as Microsoft Teams Free and OneDrive.
support.microsoft.com
Checked automatically: 8 of 8 checks passed, 3 quoted passages · compared with Microsoft's page on Oct 20, 2026
- Quotes found in the official pages: passed
- Numbers found in the sources: passed
- Vulnerabilities from the dossier only: passed
- Links to allowed domains only: passed
- Every official change covered: passed
- Readable plain text: passed
- Changes confirmed by the file list: passed
- Sources agree: passed
A second AI read the text against the sources: correctness 4/5, clarity 4/5, completeness 5/5. How we work
Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake