...and uninstalling, reinstalling, booting and rebooting, nothing worked.
But I eventually found a solution that worked for me:
1. Make sure to quit any individual CC applications (I think Adobe CC was still running)
2. I turned off all network connections (wired and wireless)
3. I started the Adobe apps that I wanted to use
4. Libraries appeared
5. I turned on my network connections
Don't know if this will work for everyone but thought I'd share to help the community. As a long time customer, I find it very frustrating. And seeing past cries for help, I realize I'm not the only one.
I've had a lot of bad luck with all the syncing features also. Differences in size between what's on my computer and what's in the cloud, yet it says 100% sync. Errors during sync, that when I just simply restart the same sync batch, those errors disappear and new ones arise, until eventually it all syncs... very frustrating indeed.
I've asked for help on the issue, no responses. Very frustrating!
Thanks for sharing your solution Troy. That is definitely strange that that would have worked. The libraries panel is dependent on the internet connectivity to load and keep the content within the library panel up to date. I'm not sure why temporarily disabling and re-enabling it would help, but will remember this and suggest it as something for other to try too.
Thanks Troy. The suggested Adobe solutions didn't work for me so I tried your method and disconnected from our network and turned off my wi-fi. My CC Libraries are appearing now in most of the applications. I'm still getting an error message in Indesign but I'm confident I'll get that one to work as well.