We have quite a few users this morning reporting their PCs getting stuck in a 'reboot loop' after installing Security Update KB5004945. They get the options to do an advanced repair, which doesn't work. This hasn't been the case for all users, but some commonalities between them are 20H2 build 19042.1052 and one with 19042.804. As the users are working remotely and do not have admin credentials, there are some limitations as to what they are able to do themselves. Does anybody have any information or suggestions on resolving this remotely or whether Microsoft are aware and releasing a new patch?