The Update BureauKB5077744: Cumulative update for Windows 11, versions 24H2 and 25H2, January 2026. Remote Desktop sign-in failures corrected
Remote Desktop connections work again for users who could not sign in after the January 13 update. Some lock-screen password icons and cloud-storage apps may still have problems.
Does it affect you? Applies to: Devices running Windows 11, versions 25H2 or 24H2, on x64 or Arm64 processors.
Review notes Additional details from the official release notes (2) Read notes
- Known issues The password-icon issue is addressed in KB5074105. Until then, select the placeholder where the icon should appear to open the password box.
- Known issues The cloud-storage issue is addressed in KB5078127.
The official sources are linked at the end of the page.
What changes
Improvements 2 changes
AI components
-
Four AI features get updated versions on Copilot+ PCs.1
Image Search, Content Extraction, Semantic Analysis, and Settings Model are updated to version 1.2511.1224.0. These components do not install on other Windows PCs or Windows Server.
Servicing stack
-
The component that installs Windows updates gets quality improvements.2
Includes servicing stack update KB5071142, build 26100.7295.
Fix 1 change
Remote Desktop
-
Some users can sign in to Remote Desktop connections again.3
Fixes sign-in failures during authentication in Remote Desktop apps, including Windows App, after KB5074109.
Known issues
-
Password icon might be missing or invisible in the lock screen sign-in options
The password icon might be missing from lock-screen sign-in options. The blank space where it should be still opens the password box; this mainly affects managed work devices.4
How to apply the workaround WorkaroundSelect the blank space where the icon should appear, then enter your password.4
-
Apps might become unresponsive when saving files to cloud-based storage
Some apps might stop responding or show errors when opening or saving files in cloud storage such as OneDrive or Dropbox. Outlook might hang with PST files stored on OneDrive; sent items might be missing, or old emails might download again.5
Workaround status No workaround yetMicrosoft has not published a manual workaround for this issue yet. Monitor release health until a resolving update is available.
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2026-01-17
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
-
KB5074109, KB5072033, KB5070311, KB5068861
+39 earlier
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
- KB5078127
| Version | Build | Channel |
|---|---|---|
| 24H2 | 26100.7627 | General availability |
| 25H2 | 26200.7627 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
681 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| Hyper-V and virtualization | 7 |
| Graphics and display | 4 |
| Networking | 4 |
| Kernel | 3 |
| Printing | 3 |
| Audio | 2 |
| File Explorer and shell | 2 |
| Secure Boot | 2 |
| Settings | 2 |
| Search | 1 |
Verified in package: changed files confirm AI components.
Sources
Cited passages from Microsoft's official notes (5)
-
1.
This latest cumulative update includes updates for AI components. Even though the AI component updates are included in the update, the AI components are only applicable to Windows Copilot+ PCs
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.
[Remote Desktop] Fixed: After installing the January 2026 Windows security update (KB5074109), some users experienced sign-in failures during Remote Desktop connections.
support.microsoft.com -
4.
If you hover over the space where the icon should appear, you’ll see that the password button is still available. Select this placeholder to open the password text box and enter your password.
support.microsoft.com -
5.
After installing this update, some applications may become unresponsive or encounter unexpected errors when opening files from or saving files to cloud-based storage, such as OneDrive or Dropbox.
support.microsoft.com
Checked automatically: 8 of 8 checks passed, 5 quoted passages · compared with Microsoft's page on Oct 21, 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 3/5. 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