Desktop Dell Precision Mini Tower T3620
Windows 10 v1909
Error 30 on Login (See attached picture for Client Version)
*** Hosts file is OK; Original untouched; No entries of Spotify. ***
Solved! Go to Solution.
My Gateway Firewall had a list of blocked URL(s). I removed them and everything is OK now.
Thank you, @Sebasty. Your question "Is this occurring at an employer's network or your own network connection?" was an hint to me, to focus on my Gateway Firewall. Especially that Spotify stopped working on both computers at the same time.