How to Fix OneDrive Error 4393: Invalid Reparse Point Tag
Question details
The user needs to resolve an invalid reparse point buffer tag error that occurs when updating a business sync folder.
- Product
- OneDrive for Business
- Device & OS
- Windows
- Scenario
- Updating a OneDrive for Business folder using the Robocopy /MIR command.
- Observed behavior
- The file copying or updating process fails, returning error code 4393 with a message stating that the tag present in the reparse point buffer is invalid.
Ensure you are logged into an account with administrative privileges, as resolving file system and junction errors requires elevated Command Prompt access.
Repair Damaged Junctions using CHKDSK
Run the built-in Windows Check Disk utility to scan and repair corrupted reparse points caused by unexpected OneDrive crashes.
Error 4393 typically indicates that the Windows file system junctions or reparse points have been damaged. This frequently happens if the OneDrive application crashes, terminates unexpectedly, or experiences forced sync interruptions.
Using the CHKDSK utility allows Windows to scan the drive's file system metadata and automatically fix logical errors within these reparse point buffers.
Click the Start menu, type 'cmd' into the search bar, right-click on 'Command Prompt', and select 'Run as administrator'.
In the console window, type 'chkdsk C: /r /f' (replace 'C:' with the specific drive letter where your OneDrive folder is located) and press Enter.
If prompted that the volume is in use, type 'Y' to schedule the disk check for the next time the system restarts.
Reboot your computer. Windows will automatically run the disk check during the startup process. Allow it to finish completely without interrupting it.
Seamlessly Manage and Edit Files with WPS Office
While troubleshooting complex Windows file system and OneDrive sync issues, ensure your daily productivity remains uninterrupted. WPS Office offers a powerful, lightweight, and highly compatible alternative to Microsoft Office, letting you handle documents locally or via secure cloud alternatives without dealing with stubborn sync errors.
- 1. Download the Installer: Visit the WPS Office official website and click the free download button to get the latest installation package.
- 2. Install WPS Office: Run the downloaded setup file and follow the simple on-screen prompts to install the suite on your Windows PC.
- 3. Open Your Documents: Launch WPS Office to easily create, edit, and seamlessly save your work without worrying about background sync crashes.
Frequently Asked Questions
What does 'tag present in the reparse point buffer is invalid' mean?
A reparse point is a Windows feature used to create folder links (like symlinks), which OneDrive uses heavily for its 'Files On-Demand' feature. When the tag is invalid, it means the background link connecting your local placeholder file to the cloud has become corrupted.
Why does OneDrive Error 4393 keep returning after a temporary fix?
If the error returns frequently, it may be caused by an underlying software conflict, a failing storage drive, or a recurring bug in the OneDrive client. Ensure your OneDrive app is fully updated, or try unlinking and relinking your account.
How can I delete a folder that still throws the 4393 error?
If running CHKDSK does not permit folder deletion, boot your Windows PC into Safe Mode. In Safe Mode, third-party apps and background sync processes are disabled, which usually frees up the corrupted file lock and allows you to manually delete the stubborn folder.
