mouse without borders has problem

[XILINLUO1]

Microsoft PowerToys version

v0.91.0

Installation method

Microsoft Store

Area(s) with issue?

Mouse Without Borders

Steps to reproduce

PowerToysReport_2025-05-15-20-34-21.zip

✔️ Expected Behavior

The situation was normal the day before yesterday, but since yesterday, the two computers have been unusable. I don't know what the problem is; I have tried many methods to fix it, but none worked.

❌ Actual Behavior

No response

Additional Information

No response

Other Software

No response

[similar-issues-ai[bot]]

We've found some similar issues:

• #36895 , similarity score: 82%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

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[gtimbo]

Same here.

PowerToys updated itself today to v0.91 and now Mouse Without Borders seems fundamentally broken. When using the MWB interface within PowerToys itself, I just couldn't seem to get both machines to connect (and I'll admit that the whole Security Key interface is now quite confusing, but that's for another time). So, I switched both machines to use the old interface, and now when the security key is properly entered I just continually get Windows notifications saying "Connected to new machine xxxx"; literally one or more a second. However, the old interface is showing "Handshaking" on one computer, and "Error" on the other computer, and MWB isn't actually working.

I can't find any logs anywhere that show what's going on, so I really can't say what's actually happening.

Note that one machine is Windows 10, and the other machine is Windows 11.

[gtimbo]

Ok, so my issue seems to now be resolved, although exactly why/how I'm not sure.

Today I updated both machines to the latest PowerToys (0.91.1), then turned MWB back on (I had switched it off to stop the notifications), then used the "Add a firewall rule for Mouse Without Borders" troubleshooting tool on both machines (I'm not sure if I had ever previously done this), which succeeded, then turned off the "Show the original MWB UI" setting and rebooted. Everything now seems to be working again!

The one other thing that was strange, was that a couple of days ago my Windows 10 machine suddenly required pressing Ctrl-Alt-Del on the lock screen, which I had never turned on (perhaps a Windows update turned this on), so I also turned that off in the registry. I doubt that would have had an effect, but you never know.

[noraa-junker]

The Newest version fixes a commonly appearing connection bug. Can you confirm that still happens with the newest version of PowerToys?

/needinfo

[microsoft-github-policy-service[bot]]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 5 days. It will be closed if no further activity occurs within 5 days of this comment.