How to fix error error-invalid-oplock-protocol in Windows 11

Solution Steps

1. 1 Press Windows key + X and select 'Device Manager' from the menu. This opens a list of all hardware devices. Look for any devices with a yellow warning icon—these might have outdated or problematic drivers.
2. 2 Right-click on the device that might be causing the issue (e.g., network adapter, storage controller) and select 'Update driver'. Choose 'Search automatically for drivers'. Windows will search online for the latest driver. This ensures your hardware uses a driver that fully supports Windows 11's oplock protocol.
3. 3 If updating drivers doesn't help, check if the application that triggers the error has an update. Visit the software vendor's website and download the latest version. Developers often fix oplock protocol issues in updates.
4. 4 If the error occurs during Windows Update, run the Windows Update Troubleshooter. Press Windows key + I to open Settings, go to 'System' > 'Troubleshoot' > 'Other troubleshooters', and click 'Run' next to 'Windows Update'. This tool automatically detects and fixes common update issues.
5. 5 As a last resort, you can disable oplocks for the specific file share or drive. Open Command Prompt as administrator (Win+R, type 'cmd', press Ctrl+Shift+Enter) and run 'fsutil behavior set disableoplock 1' to disable oplocks system-wide. Note: This may reduce performance, so only do this if the error is persistent.