Can you please open a support case for business on this issue? https://learn.microsoft.com/en-us/surface/contact-surface-business-education-support
Surface Pro 9 Type Cover disconnects after recent Windows updates including KB5077181
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Salvino Sepulveda Jr
5
Reputation points
We are observing an issue on multiple Surface Pro 9 devices where the Type Cover keyboard intermittently disconnects shortly after user sign‑in.
The behavior appears after recent Windows updates. In the environment, affected devices are running newer Windows builds, and uninstalling KB5077181 has temporarily resolved the behavior during testing. However, we have not found any Microsoft‑published documentation or advisory confirming KB5077181 as a known cause.
We have reviewed Microsoft documentation, release notes, and existing community discussions. While similar keyboard connectivity issues are referenced for Surface Pro 9 devices following recent Windows updates, KB5077181 is not explicitly identified as the root cause.
At this point, we are looking to understand:
- Whether this behavior is a known issue under investigation
- If additional diagnostics, logs, or validation steps are recommended
- If there are any guidance or updates planned for Surface Pro 9 keyboard connectivity after recent Windows updates
Surface | Surface Pro | Performance and maintenance
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Delvyn Hunter 0 Reputation points2026-02-19T17:49:55.75+00:00 I have seen this with 4 Surface Pro 8's this week. Out of interest, does theSurface Diagnostic Toolkit now show your type cover pro as a generic off-brand keyboard and refuse to diagnose it?
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Deo Quilab 5 Reputation points2026-02-22T11:39:37.53+00:00 I have a surface pro 11, with the surface pro 9 typecover with stylus. I'm encountering the same issue since last week. I have tried most suggested solutions along the lines of power flushing by holding the power button and the volume up button. So far I've isolated a few areas where the issue may lie. In Device Manager, under Firmware > Surface System Aggregator, and under Sensors > the always aware sensors for display and keyboard, as well as System Devices > all the "System Managers". By uninstalling these, doing a power flush restart, I can reach the point where the keyboard turns on its backlight, however, the moment i fold the keyboard into the position where the Surface Pen is hidden, the keyboard will stop functioning as before. So it's definitely an issue with the sensors. And therefore remains unfixed.
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3 answers
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Barb Bowman 80,695 Reputation points MVP Volunteer Moderator2026-02-17T14:05:09.89+00:00 -
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 23%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESS%3C/text%3E%3C/svg%3E)
S.Sengupta 29,426 Reputation points MVP Volunteer Moderator2026-02-17T00:13:12.0266667+00:00 As of current publicly published documentation:
There is no formal Microsoft advisory explicitly naming KB5077181 as a confirmed root cause.
Suggestions:
Run Surface Diagnostic Toolkit.
Open the Event Viewer to check any application error logs related to this issue.
Control Panel →Power Options →Choose what power buttons do →Turn off Fast Startup
This often stabilizes Surface keyboard firmware initialization.
Download and manually install the latest:
Surface Pro 9 Drivers & Firmware package
From official Microsoft support page
Boot into UEFI:
Hold Volume Up
Press Power
If keyboard remains stable in UEFI → confirms OS-level issue.
If keyboard disconnects in UEFI → hardware or firmware corruption.
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Q&A Assist2026-02-16T16:13:11.2333333+00:00 AI generated content. This question contains an answer created with AI from Q&A Assist. Learn moreThe issue you are experiencing with the Surface Pro 9 Type Cover disconnecting after recent Windows updates, including KB5077181, may be related to known connectivity problems that have been observed with Surface devices following updates. However, as of now, there is no explicit confirmation from Microsoft that KB5077181 is the definitive cause of this issue.
Currently, this behavior is under investigation, and while there are reports of similar issues, specific diagnostics or logs have not been detailed in the provided context. It is advisable to monitor Microsoft's official channels for any updates or guidance regarding keyboard connectivity issues with the Surface Pro 9 after recent updates.
For additional troubleshooting, you might consider uninstalling the problematic update as a temporary fix, as you have already done, and keep an eye on any forthcoming patches or advisories from Microsoft that might address this issue.
References: