[BUG] Chrome Web Store extension install fails with FAILED_TO_COPY_EXTENSION_FILE_TO_TEMP_DIRECTORY
Browser version: Brave (please check yours via brave://version)
OS: Windows
Extension (in exam): Social Blade
Description:
Every attempt to install an extension from the Chrome Web Store fails with the following error:
“Errore di download: Impossibile installare il pacchetto: FAILED_TO_COPY_EXTENSION_FILE_TO_TEMP_DIRECTORY”
The error appears consistently regardless of the extension being installed. The issue seems to be related to Brave’s inability to write the downloaded extension package to the system’s temporary directory during the installation process.
Steps to reproduce:
- Open Brave and navigate to the Chrome Web Store
- Select any extension (e.g. Social Blade)
- Click “Add to Brave”
- Error appears immediately after download completes
Expected behavior:
Extension installs successfully.
Actual behavior:
Installation fails with FAILED_TO_COPY_EXTENSION_FILE_TO_TEMP_DIRECTORY.
Troubleshooting steps already attempted (none resolved the issue):
- Repeated installation attempts on multiple different extensions
- Granted full read/write permissions on the Program Files folder
- Granted full read/write permissions on the system TEMP folder
- Disabled all antivirus software during installation attempts
- Completely uninstalled and reinstalled Brave
Additional context:
This issue occurs every time, suggesting a persistent permission or path configuration problem rather than a one-off failure. Has anyone else experienced this or found a reliable fix?