Thank you for posting in Microsoft Q&A forum.
If your clients are internet-based, joined to Microsoft Entra ID, or both, please refer to this article:
If not, make sure you do not have Application Catalog roles installed anywhere.
You may check SCClient_<Domain>@user.log to see if there any error?
You may also check Ramesh RK's comment to see if it helps:
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Add comment".