To be honest despite having had PCs running Windows 11 since the day it was released... I had not noticed this problem. Looking this up after you mentioned it. So, I asked the Grok4 AI model in Perplexity.ai. It had a few suggestions that might be somewhat helpful to you.
“The clipboard in Windows 11 can lock up due to conflicts with background applications, such as video players or resource-heavy programs like Adobe software, leading to inconsistent behavior during sessions. System updates, including the 24H2 release, have introduced specific bugs where clipboard history appears blank or stops syncing across devices, exacerbating reliability issues.” I still prefer Windows 10 on my primary laptop so that is probably why I had not noticed. More info here:
https://www.perplexity.ai/search/windows-11-has-a-problem-with-dygLG4TBTPOa10K3wszOUw#0
#77 thanks, I installed Windows 11 in a VirtualBox window and the issue showed up right away.
Many many steps the article listed as fixes that are only temporary.
https://www.drivereasy.com/knowledge/solved-copy-and-paste-not-working/
You would think Microsoft would fix such an big issue.