WTH, finally figured out why Cursor couldn’t write files! Turns out, Windows had triggered BitLocker encryption on my system and project drives, which silently stripped the background write permissions. I almost reinstalled the system today out of frustration, but luckily, I paused and checked the BitLocker status. After decrypting both the system drive and the project drive, everything worked perfectly again.
If you’re struggling with similar file permission or write access issues (especially in development tools like Cursor), check whether BitLocker is enabled on your drives. Here’s a quick solution:
- Go to Control Panel > System and Security > BitLocker Drive Encryption.
- Select the locked drive(s) and click Turn off BitLocker
- Wait for decryption to complete, then restart your system.