Hi @Marc Looren / MHL Solutions ,
I updated KB5024296 in my environment, and the URL of OWA did not redirect, so it should not be the update of SU that caused this issue.
Please check the OWA virtual directory settings in EAC and http redirection in IIS for any changes.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.