Mouse freezes after macOS Tahoe 26.5 / 26.5.1 update on Mac mini (Both Wired and Wireless)

EDIT - below I wrote that the application is free, but that is not correct.

You have this "Mac Mouse Fix.app", which from a quick search appears to be a third party free mouse driver.

I am not familiar with it, but given that you are having problems with the mouse, it stands out as a very likely suspect.

  [Running] sm_launchd.plist (Noah Nuebling - installed 2025-12-31)
    Executable: /Applications/Mac Mouse Fix.app/Contents/Library/LoginItems/Mac Mouse Fix Helper.app/Contents/MacOS/Mac Mouse Fix Helper
    Location: /Applications/Mac Mouse Fix.app

Start your mac in Safe Mode.

In Finder, press Command-Shift-G and paste

/Library/LaunchAgents/sm_launchd.plist

Drag the file to the trash.

Also drag the application to the trash (it lives in /Applications).

Restart normally and test.

This could be due to a conflict with the Logitech mouse driver. Yes, that could affect even a different mouse (in case you are wondering).

You could try uninstalling it, or updating, if an update is available.

I think that the mouse itself can work without a driver.

If you are unsure: Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

We can see from the report what third party drivers or extensions are installed, and maybe spot some other possible source of problems.

shapack wrote:

I am in the middle of a huge work project with a mouse that is freezing, acting on its own, dragging open applications. This is a nightmare! WTH Apple?

Let me guess: you have a third party mouse (probably Logitech). Check that the drivers are up to date, or uninstall any third party mouse driver completely (most mice just work without any driver, anyway).

Update - Turned the apple mouse off and back on again - problem solved.

mandogeekgal wrote:

Logitech MixMaster4 for Mac Mouse

By the way, blaming the driver isn’t a fix. Apple updates shouldn't break drivers.

shut down my VPN

Logitech devices and their drivers have been flagged for several recent versions of MacOS by users here for conflicts with the OS. Third party vendors are responsible for keeping their products and drivers compatible with the latest MacOS, they get those MacOS updates way in advance for that reason. Apple doesn't break drivers, but some vendors don't test properly or let their products get out of date.

There are thousands upon thousands of peripherals that connect to Macs (drives, printers, keyboards, mouse, video equipment, cameras, card readers, speakers ... what not) and Apple does not test every system update with every single one of those. Instead Apple releases its new OS versions in advance and normally vendors test and make updates if they have some custom code that doesn't meet Apple's published specifications.

And VPN are generally not advised, they also conflict with many things. The only time VPN should be used is to access a secure and closed network, as provided by an employer, school, or financial institution. Otherwise VPN provide a false sense of security, as the VPN operators can see and access all network traffic and it has been discovered that they sell the data (your data) for a profit. Shutting down a VPN does not disable pieces of it from running in the background.

Add Elements/Karabiner-Core-Service.app to the mix

It too can interfere with Mice Inputs from what I have read

JaviRambal wrote:

After updating to macOS Tahoe 26.5, the Karabiner background options were disabled (Background Activity, etc). I am going to try enabling them now to see if that fixes it. Thanks.

Interesting, the only mention of Karabiner - Elements from the Report, is as a Crash 33 times

And no where else

2026-06-02 08:00:04 Karabiner-Core-Service Crash (33 times)

    First occurrence: 2026-06-01 13:22:59

    Executable: /Library/Application Support/org.pqrs/Karabiner-Elements/Karabiner-Core-Service.app

    Details:

      libsystem_c.dylib: abort() called

Happening to me too. Keyboard and mouse work for a bit, but then keyboard stops working. Mouse movement works, but clicks don’t do anything.

Mac Studio 4 Max

Tahoe 26.5

Satachi bluetooth mechanical keyboard

Logitech MixMaster4 for Mac Mouse

By the way, blaming the driver isn’t a fix. Apple updates shouldn't break drivers.

I failed to mention, I was at 26.5 when observing this, and it didn’t start immediately. And, after reboot, both items worked OK for a while.

I uninstalled anything new and shut down my VPN, which I had just begun using again. Same problem.

Installed 26.5.1. So far so good. We’ll see if it shows up again.

mandogeekgal wrote:

I failed to mention, I was at 26.5 when observing this, and it didn’t start immediately. And, after reboot, both items worked OK for a while.

I uninstalled anything new and shut down my VPN, which I had just begun using again. Same problem.

Installed 26.5.1. So far so good. We’ll see if it shows up again.

Coincident with Tahoe 26.5.1

According to Apple's release notes for the update, ‌macOS Tahoe‌ 26.5.1 addresses an unexpected shutdown issue affecting certain enterprise users on M5 Macs

I am in the middle of a huge work project with a mouse that is freezing, acting on its own, dragging open applications.

[Edited by Moderator]

Im having the same issue after updating 26.5.1, and no i don't have a third party mouse, it's apple all the way.

Anyone found a fix?