If you use two OneDrive accounts on your Mac computer, there is a possibility of getting this error message when OneDrive cannot differentiate both accounts correctly. It can happen due to internal file corruption. When this message appears, the synchronization stops automatically, and users cannot upload new files to the OneDrive storage.
You’re syncing a different account OneDrive error on Mac
To resolve this issue: Let’s take a look at these steps in detail. At first, you need to open the Keychain Access on your computer. You can follow any method to do that. However, it is effortless to open this app using the Spotlight search. For that, press the Cmd+Space buttons together and search for keychain access. You should find the app in the results as you type.
After opening the Keychain Access, you need to find either OneDrive Cached Credential or OneDrive Standalone Cached Credential. If you installed OneDrive alongside the Word, Excel, PowerPoint, etc., you should see OneDrive Cached Credential. However, if you installed only OneDrive on your Mac computer, you should see OneDrive Standalone Cached Credential. In any case, you need to right-click on it and select the Delete option.
It will ask you to confirm the removal. You can confirm it on the popup window. After completing the last step successfully, you can open the OneDrive app on your Mac computer and try to log into your account. Now, you should not show any error message, and you can upload files as usual. I hope this tutorial helps. For your information, the same problem also appears on the Windows computer. If so, you can fix You’re syncing a different account error in OneDrive for Windows using this tutorial. Related read: You’re already syncing this account – OneDrive for Mac error
