mask not working

Hi, thanks for reaching out! Would you mind sharing the exact version of Lightroom you're using, along with the operating system you're working on? What happens when you try to apply a mask to an image? Are you getting an error? 

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from using the community">