"Annoying but fixable without reinstalling your whole OS. Takes 10–20 minutes of following Adobe’s clean-up steps. Most common on Windows 10/11 after a failed partial update."

If the quick fixes failed, the most likely culprit is a permission error. The operating system is refusing to let Adobe write files to the necessary directories.

Select to wipe existing Adobe data (back up your presets and plugins first!). Restart your computer and attempt a fresh installation.