After downloading Big Sur, open programs become repeatedly inactive during use

lorie57 Said:

"After downloading Big Sur, open programs become repeatedly inactive during use"

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Create a New User:

See what happens when you create a new Administrator User? Do you still get this error? If so, then it is a misconfiguration in the current user. If not, then you may need to reset something.

Safe Mode:

Boo into Safe Mode, wait 30 seconds once logged in, shutdown the Mac, and then log in as normal. In Safe Mode, login items do not run, and corrupt system files(caches) are fixed. So, see if that fixes this. To boot into Safe Mode, hold down the shift key upon boot.

You might be surprised how light a brush the heel of your hand has to make on the trackpad to move the cursor to another part of the screen. You should at least give it a try to see if it helps. I've turned it off on my Macbook Air and it's made a world of difference.

It's highly unlikely that it's a problem with Big Sur.

Lorie57 Said:

"After downloading Big Sur, open programs become repeatedly inactive during use: Thank you, thank you, TheLittles!!! Safe Mode solved my problem! I forgot about that option until you mentioned it here. Thanks again!"

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You are welcome.

You're probably getting an unintentional click by touching the trackpad while you're typing. Try turning off Tap to Click in Trackpad preferences Change Trackpad preferences on Mac - Apple Support