Hello @brunce ,
Welcome to Microsoft Q&A forum.
Does rebooting your machine and going to VS Installer > restarting Visual Studio solve this issue?
What is the reason for this?
See this similar thread: VS Installer requires a computer restart after every VS update. Sometimes files which need to be used when installing components/extensions or updating VS, may be locked as other applications/processes are using them. In this situation, a restart will be needed.
How to solve it?
Normally, following the message to reboot machine should solve it. If it doesn’t work, try to open VS Installer > Restart VS or click More > Repair to repair Visual Studio.
Feel free to let us know the result.
Best Regards,
Tianyu
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