first, update your os and then restart your computer.
if that fails, and you have a mac, grant disc access to your cc desktop app - system preferences > security & privacy > privacy > full disk access > cc desktop app (in the midst of this step if you see an alert about granting cc libraries disk access, allow it and you're done)
if that fails proceed to the following steps:
quit all Adobe related products
kill all the CCLibraries processes in task manager (win)/activity montor (mac).
Delete all folders that start with “CC_LIBRARIES_PANEL_EXTENSION_xx_xx_xx” in this location*
contact adobe support via chat so they can check your computer, especially for a user profile error. if you have time, and they fix the problem, please report what they did.
there are 2 ways to contact adobe support; chat and twitter (now x):
chat: if you have or want to purchase a subscription, use a browser that allows popups and cookies and click here, https://helpx.adobe.com/contact.html?rghtup=autoOpen in the chat field (lower right), type AGENT be patient, it can take quite a while to reach a human.
twitter/x: tweet @AdobeCare
p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative.