OneDrive Not Syncing After Password Change
Is your OneDrive not syncing after password change?
Thats a disaster when you find the OneDrive not syncing files after password change.
For more troubleshooting methods, check this post yo:11 Tips to Troubleshoot Internet Connection Problems Win 10.

Step 1: press the OneDrive icon on the system tray and nudge the gear icon >prefs.
Step 2: In theAccounttab, clickUnlink this PCand then chooseUnlink account.
After the unlink, you should relink your account.
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Step 1: InputControl PanelinSearchand open it.
Step 2: ClickUser Accountsand thenManage Windows CredentialsunderCredential Manager.
Facing the warning pop-up cached credentials have expired in Microsoft Office?

Read this post to fix this sign in required trouble.
Fix 4: Update System
It is important to keep your OneDrive and system up to date.
To upgrade your system, it’s possible for you to do as follows.

Step 1: OpenSettingsby pressingWin + Iand clickUpdate & Security.
you could try thisfree backup software MiniTool ShadowMaker.
It allows you to sync files and folders between devices.
Besides, its localdata backupand sync can reduce the affect of Internet and make your data more secure.
you could try it for 30 days after downloading and install it.
MiniTool ShadowMaker TrialClick to Download100%Clean & Safe
Step 1: launch the program and clickKeep Trial.
Here, you’ve got the option to choose NAS machine as your destination.
Step 3: Now, you might clickSync Nowto start the sync task.
Bottom Line
Are you still stuck in the issue: OneDrive not syncing after password change?
Hope this article can resolve your issue.