LrC vignetting tool is not functioning. Zero changes appear on portrait regardless of the tool's settings, it seems to be completely disabled. Additionally, lens correction settings do not effect the tool.

Hi ​@Angel Elizabeth, Welcome to the Lightroom Classic Community forum! To better help you with this issue, we would like a few more details. Can you send your system info, a screen recording of the issue, and a numbered list of the exact steps needed to reproduce it? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here.

In the meantime, I would recommend trying these basic troubleshooting steps:

• Clear your cache: Go to the top menu and open Preferences (Edit > Preferences on Windows, or Lightroom > Preferences on macOS). Click the Cache tab, then look for the option to Clear Cache or to adjust the maximum size allowed for stored originals and previews. Remember to check if your cloud sync is fully updated and active before clearing space, so you do not lose unsynced work

• Reset Lightroom Classic Preferences: Please refer to this Helpx article for steps.  https://adobe.ly/3HsQXpA It is recommended to back up your catalog before resetting preferences. You may refer to this article for more information:  https://adobe.ly/4dW8vqF.

• Use the Adobe Cleaner Tool to reinstall:  https://adobe.ly/4zidJ9f

If none of these steps work for you, please send over the requested information so we can continue troubleshooting. I hope this helps! ^CH