The Update BureauKB5077795: Cumulative update for Windows 10, version 1809, January 2026. Remote Desktop sign-ins fixed; cloud-file hangs remain possible
Some users can sign in over Remote Desktop again. Apps may still hang when opening or saving cloud files, and the update also improves the servicing stack.
Does it affect you? Applies to: Devices running Windows 10 Enterprise LTSC 2019, version 1809, on x86 or x64.
Microsoft publishes separate notes for this KB for Windows Server.
What changes
Fix 1 change
Remote Desktop
-
Some users can sign in over Remote Desktop again.1
Fixes sign-in failures involving authentication steps in Remote Desktop applications on Windows, including the Windows App.
Improvement 1 change
Servicing stack
-
The component that installs Windows updates gets quality improvements.2
Includes servicing stack update KB5074222, build 17763.8260, with the cumulative update.
Known issues
-
Some devices with Virtual Secure Mode enabled might fail to shut down or hibernate
Some PCs with Virtual Secure Mode enabled might restart instead of shutting down or hibernating. KB5075904 addresses this issue.3
Resolution Fixed in KB5075904Install KB5075904 (or a later cumulative update) on affected devices. No manual workaround is required after updating.
-
Apps might become unresponsive when saving files to cloud-based storage
Some apps might hang or show errors when opening or saving cloud files. Outlook might also hang, miss sent mail, or download old mail again when its PST file is on OneDrive.4
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
- KB5073723, KB5074975, KB5071544, KB5068791
- Replaced by
- KB5078131
| Version | Build | Channel |
|---|---|---|
| 1809 | 17763.8280 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
173 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| Audio | 2 |
| Hyper-V and virtualization | 2 |
| Kernel | 2 |
| Secure Boot | 2 |
Sources
Cited passages from Microsoft's official notes (4)
-
1.
Fixed: Some users experienced sign-in failures during Remote Desktop connections. This issue affected authentication steps for different Remote Desktop applications on Windows such as the Windows App.
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.
This issue is addressed in KB5075904.
support.microsoft.com -
4.
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, 4 quoted passages · compared with Microsoft's page on Sep 25, 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 5/5, clarity 4/5, completeness 4/5. 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