Hi, @Bojan Zivkovic
Thank you for posting in Microsoft Q&A forum.
If you are using Configuration Manager with the software update point installed on a remote site system server, the WSUS Administration Console must be installed on the site server.
And according to the error message, it failed because WSUS is currently syncing, so have we checked the status of WSUS syncing?
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".