try the above to log in with out HTTPS
if yes then
removing Microsoft Patch KB3061518 from my windows 7 64 bit PC lets me access BAS
A recent Microsoft patch might have caused this, here is the solution: http://www.blackberry.com/btsc/KB37047
Article ID: KB17894 is a good place to start is the above dont work
Start with this.
KB02068 - How to troubleshoot SRP connectivity issues
Have you made any perimiter or software firewall changes?
Can you flush your DNS server cache?
Are all your BES services running?
DBNS can be ignored.
What are they being logged on as?
Try stopping these services in this order:
Starting the services in this Order:
Let us know how you progress.