I found the problem with my computers and the update KB5015814. Two of my seven computers installed the update without issue.
The other five computers would not install this update. I had thought about disabling MALWAREBYTES to see if that was the issue
but got tied up in other troubleshooting and since MALWAREBYTES is installed on all seven of the computers with the same settings.
(Actually eight...One Win10 machine) and two of the seven Windows 11 machines had installed this update with MALWAREBYTES installed (Latest version on all) I had dismissed it as a possibility (WRONG!!!). In the end it WAS MALWAREBYTES! Version 4.5.10.200. Once I disabled all of MALWAREBYTES services on the MALWAREBYTES UI Panel I was able to install KB5015814 without issue on all the remaining five Windows 11 computers. UGH. Always try the simple thing first....Hope this might help someone else. Regards.