@Sierb not sure if your issue is same or different, but going to paste some information below for a known issue some experience. It might be worth checking out.
it sounds like maybe you ran Brave as administrator instead of running normally. This can cause issues to occur where Windows will change permissions to components folders and others. Then when opened normally, it blocks access to those because it doesn’t have the right permissions. It’s a bit headache.
You’ll need to do one of two things, whichever you think is easier.
Follow instructions at Brave doesn't start when I run it as administrator and Brave Shield doesn't work - #41 by clifton in order to reassign permissions to the folders. Do remember that you’ll need to completely close Brave and the background processes if you do this. Maybe just try restarting your device.
If that’s too complex or doesn’t work for you, you would need to completely uninstall Brave and all of its folders. Obviously you would want to export passwords and/or bookmarks if you want to keep them. Then after that go to uninstall Brave and you’ll be met with a prompt asking if you would like to delete browsing data. You need to check that box so it will erase the components folders and others. Once done, install again and it should work.
If you uninstall without choosing that checkbox, it will keep the folders. So when you reinstall nothing will have changed.
Reminder, running as administrator can happen in two different places and should not be done.
Right click and run as admin:
Right click shortcut → properties → compatibility. There’s a checkbox for it, make sure it’s not selected
