Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello everyone,
yesterday i was playing from home lan and everything was ok, but today when trying to log in from my workplace, I get a 'Connecting' then a long pause until I get a 'Disconnected from server' message. Anything I could do? I already cleared WDB folder and deleted all addons. 2 days ago it was OK when i logged from work and now it wont let me in. Zero changes was made on this client and overal to the system. Win7.
Last played on char 'Corpserunner'

Solved.
Some problem with internet provider. Changed network to another line and everything is fine.