I've upgraded to El Capitain and since then I can't login to the App Store. The App Store prompts me for my login details and once I try to sign in, it just shows a spinner for ever. I have to eventually force quit.
- The login details are correct (I've check on the web App Store and they work)
- I've tried deleting the cache for the App Store (no luck)
- No VPN / Anti-Virus / Firewall running
- I've check some other suggestions such as checking the serial number, and the number is in place.
I don't know if it gives a clue, but when I tried to run Tweetbot (bought through the App Store) it prompts me for my details saying "This App was purchased on another computer, please sign-in to continue using". This is not true, I'm using the same machine I bought the app with.
This is quite annoying since I have a bunch of updates (many security ones) which I can't download and some apps don't even work.
Any suggestions? Thank you.