Unknown Error Trying To Lock File 3 Ways To Open The Files

Alternatively, you can read our guide about how to fix SharePoint documents that won’t open in the application.

What causes an unknown error trying to lock file?

The Unknown error trying to lock a file can occur for different reasons. Hence, the reason below is the specific factors causing this error.

File in use – The system stores raw or processed data in a hierarchical structure of directories. Therefore, you can encounter the error unable to lock if the file is already in use. Corrupt file – The system file can become corrupt or damaged due to outcomes of different factors such as malware, bugs, power outage, or human error. It can cause the SharePoint file to malfunction when opened, popping up error messages such as unknown error trying to lock file. Permission issue – Permissions ensure that only authorized users can access and modify system resources. Therefore, you can encounter difficulty opening files if you don’t have permission to access the file on a system. Network issues – Network congestion can cause an error if you are accessing a file over the internet.

The causes above vary depending on the circumstances. Nonetheless, we will discuss the steps to resolve the error and open the files.

How can I fix an unknown error trying to lock the file?

Try the following preliminary checks to fix the file-locking error:

Close background apps running on your PC. Scan your device with antivirus. Restart your device in Safe Mode and check if the error is solved.

You should proceed with the advanced steps below if the error persists.

1. Create a network location via Registry Editor

The Registry Editor creates a Network Location for troubleshooting the SharePoint network. Read about how to fix a corrupt registry on Windows.

2. Clear browser cache and cookies

Clearing the browser cache and cookies will remove all pre-store data and refresh the website. Check our guide about how to clear the computer cache in Windows 11.

3. Add SharePoint as an exception in Firewall settings

Allowing SharePoint as an exception in Windows Firewall prevents the firewall from checking or blocking its processes. In addition, read our guide on how to fix these files that cannot be opened error messages. Also, do not hesitate to check how to open SharePoint in File Explorer. Should you have further questions or suggestions, kindly drop them in the comments section.

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