File Sync Error on New PC

I'm just setting up a new PC in work and get a repeated file sync error. I've uploaded my debug output log to the Zotero server (D1577159741). I imagine the problem on the log is here:
(+0000346): Unexpected status code 503 caching authentication credentials in Zotero.Sync.Storage.Session.ZFS.getLastSyncTime()
I tried syncing initially then resetting from the server. Nothing doing. Thanks in advance for any advice you could give me.

This is an old discussion that has not been active in a long time. Instead of commenting here, you should start a new discussion. If you think the content of this discussion is still relevant, you can link to it from your new discussion.