When OneDrive stops syncing, the problem is not always the same. A file can be open in another application, OneDrive can be paused or signed out, the account can be out of storage, a file can be blocked by permissions, or the sync client can simply be stuck processing changes. The safest approach is to identify the exact status first and then work through reversible checks before unlinking, resetting or reinstalling anything.
Start with the OneDrive status icon
Look at the OneDrive cloud icon in the Windows notification area. The icon and its message can tell you more than a generic “not syncing” symptom. Microsoft documents separate states for problems such as processing changes, sync pending, paused syncing, an account that is full, and an account that is not signed in. Microsoft's current OneDrive troubleshooting guide is the best reference when the label on your screen differs.
1. Check whether OneDrive is running and signed in
If the OneDrive icon is missing, OneDrive may not be running. If the icon shows that you are signed out, open it and sign in to the account that owns the files. Personal and work or school accounts can have different support paths, so confirm which account the affected folder belongs to.
2. Check whether syncing is paused
Open the OneDrive menu and review its sync state. If syncing is paused, resume it and wait for the status to change. Avoid making several changes to the same files while the client is catching up; that can make it harder to tell whether the original problem is resolved.
3. Look for “Processing changes”
OneDrive can stay on “Processing changes” when a file is still open, a large number of files has recently been added, the account was just signed in, or another temporary condition is delaying synchronization. Microsoft lists these as common causes. citeturn306634search1
First close files that you know are being edited and give OneDrive time to process a large batch. If the status remains stuck, inspect the OneDrive activity list and continue with the next checks instead of deleting the affected folder.
4. Check for “Sync pending”
“Sync pending” can be caused by hidden files, temporary files or other folder conditions. Microsoft specifically notes that a hidden file can keep a folder in a pending state and warns that deleting temporary .TMP files without knowing whether they are still in use can cause data loss. citeturn306634search6
Do not delete a pending file simply because its name looks unfamiliar. Identify it first and check whether an application still has it open.
5. Check available OneDrive storage
If the OneDrive account is full or over its storage limit, new files may stop uploading or syncing. Microsoft states that exceeding the storage limit can prevent new files from being uploaded, edited or synchronized. citeturn306634search0
Check the account's available storage before changing local settings. Deleting cloud files to create space also affects the synchronized account, so make sure the files are genuinely disposable before removing them.
6. Check permissions and locked files
A file can fail to sync when another application has it open or when OneDrive does not have the access required to read or write it. Microsoft recommends closing an in-use file and checking read/write permissions for permission-related sync errors. citeturn306634search3
This is common with documents currently being edited. Save the work, close the application, and then wait for OneDrive to retry the file.
7. Check your internet connection
OneDrive needs network access to upload and download changes. If other websites are also slow or unreachable, test the connection separately before changing OneDrive settings. For intermittent problems, a temporary network interruption may resolve itself once connectivity returns.
8. Move one troublesome file as a diagnostic test
When one file repeatedly refuses to sync, you can use a copy of the file outside the OneDrive folder as a diagnostic sample. Do not move or delete the original blindly, especially when the file belongs to a shared folder or is being edited by another person.
9. Unlink or relink only after the basic checks
Microsoft includes unlinking and relinking the OneDrive account among its recovery options when normal troubleshooting does not resolve the problem. citeturn306634search0 This should be a deliberate step because it changes the local synchronization relationship. Confirm that your files are safe and that you know which account and folders should be synced before proceeding.
10. Reinstalling OneDrive is a later step
Microsoft notes that reinstalling OneDrive can reset OneDrive settings and trigger a full synchronization, while files stored in OneDrive remain available online. citeturn306634search11 Reinstall only after simpler checks fail and you understand the local sync implications.
Why deleting the OneDrive folder is a bad first fix
A synchronized folder is not simply a cache. Deleting or moving files in it can change what is synchronized to the cloud and to other devices. Troubleshoot the sync client before deleting content.
Quick diagnosis
- Not signed in: sign in to the correct account.
- Processing changes: close open files and allow a large batch to finish.
- Sync pending: look for hidden or temporary files and check whether a file is in use.
- Account full: review storage before deleting anything.
- Permission error: verify the file is not locked and that OneDrive has access.
- Still stuck: use Microsoft's supported relink/reinstall guidance.
Quick checklist
- □ I checked the exact OneDrive status.
- □ I confirmed the correct account is signed in.
- □ I checked whether syncing is paused or pending.
- □ I closed files that may be in use.
- □ I checked cloud storage and permissions.
- □ I avoided deleting synchronized files as a first troubleshooting step.
Quick answer
When OneDrive is not syncing, start with the exact status shown by the OneDrive icon. Check sign-in, paused syncing, Processing changes, Sync pending, account storage, open files and permissions. Use unlinking or reinstalling only after the basic checks fail and you have confirmed your files are safe. citeturn306634search0turn306634search1