Hi, I'm hoping someone will be able to help. I purchased lightroom 6 (actual disc hardcopy from best buy) several months back. I've been having no issues using it until just today. Took a lot of new photos recently & was going to edit them. Unfortunately, lightroom won't fully open & I get a blue loading circle with a the caption at the top of the page saying "Not responding." I have tried uninstalling & reinstalling lightroom, but to no avail. My computer is running Windows 10.
Would suggest you to update to version 6.6 from this link: Keeping Lightroom Up-to-Date
Then, right click on Lightroom and choose run as an administrator and check if that helps.