"There was a problem with onedrive sync and we apologize..."

Hello there,

Thank you for reaching out to Microsoft Support forum.

I can understand you’re seeing a persistent OneDrive sync error on your Mac at startup, even though you haven’t set OneDrive to auto-launch. I can relate the inconveniences this may have caused, not to worry, I will do my best to help.

**What’s Likely Happening:

**Auto-launch override: Even if OneDrive isn’t in your login items, updates can sometimes force it to launch at startup.

Corrupted cache or credentials: OneDrive may be trying to sync but failing due to outdated or corrupted login data.

Dual account confusion: Having both Business and Personal accounts can sometimes cause sync conflicts, especially if both are trying to connect simultaneously.

Update bugs: A recent update may have introduced a glitch that triggers the sync error window repeatedly.

Here’s a step-by-step guide to help you troubleshoot:

1. Unlink OneDrive from your Mac:

Click the OneDrive cloud icon in the menu bar.

Go to Help & Settings > Preferences > Account tab.

Select Unlink this Mac

2. Clear cached credentials:

Open Keychain Access via Spotlight.

Search for “OneDrive” and delete any cached credentials

3. Re-sign into OneDrive:

Open OneDrive again via Spotlight.

Sign in and choose “Use this folder” when prompted.

4.Check for updates:

Make sure you’re running the latest version of OneDrive. Updates often contain bug fixes.

5. Disable auto-launch (again):

Go to System Settings > Users & Groups > Login Items.

Remove OneDrive if it’s listed.

I hope these information works!

Please do not hesitate to contact again If you need further assistance.

Best Regards,
Obyziotta / Microsoft Q&A Support Moderator