Why Does Windows 10/11 Copy and Paste Stop Working After A While?

Thank you, I've been working with MicroSoft since January. I worked in IT for over 45 years at a large auto manufacture and understand the problem-solving process. It took me a while to convince them they had a big problem. I fully rebuilt my P/C at least 5 times and even took it to a computer repair expert at my expense and still have the problem. I will continue to work with MS until they have a fix, it's just not copy and paste that fails, it's affecting many other Windows features.

Good Luck, keep in touch.

BTW, later this week I will test by removing the 2nd monitor and report back ...

Not a Dell issue. I’m on an HP Elite Desk.

Last week Microsoft Lvl3 completed the fourth factory restore of my Dell P/C from a flash drive they created. They re-installed Windows 11 and Microsoft Office Student 2021. After the re-install I checked copy and paste, and it was working no issues. I did nothing else with the P/C and left it sit for four days while I was out of town with nobody using it. When I returned after the four days, I woke it up from sleep mode and tested copy and paste, it FAILED. My last discussion with Lvl 3 and engineering they now feel it is a Dell hardware problem. When I run Dell diagnostics it is clean, no issues. I'm running dual monitors and decided to re-boot my P/C and disconnect one monitor, so far, it's been over 24 hours with no issues. I test every few hours and copy and paste is still working. I have been in contact with a local P/C repair and have all my documentation, notes, video's, screen prints and the next time it fails I'm taking it in for them to test. I really don't want to call Dell because my blood pressure will increase while I try to get to a level of support that will listen. With my 45 years of IT experience (Server and Mainframe) I have no time to start over with Dell. Dell did offer support for $90 with no guarantee to fix the problem. I'll keep you posted with any updates.

I started tracking/checking copy and paste after a reboot. I'm finding that there is a pattern, that it stops working after 24-26 hours after a re-boot. After a reboot I would check every couple of hours and document the time it was okay and when it failed. I created a video of my screen actions using Power Point and sent two videos to Level 3 support. I have a conference call with Level 3 on Tuesday., April 9. It's sounding more like a memory leak in their Windows app. Getting closer, LOL.