Aug 06 2022
...this can occur if the windows installer is not correctly installed. contact your support personnel for assistance.
Aug 07 2022
Sep 27 2022
Hello,See if this fix helps you:https://www.kapilarya.com/the-windows-installer-service-could-not-be-accessed-in-windows-11Let us know if this helps!Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.*This reply was updated to make sure it is valid.