Sometime ago i posted help because i could not get a2 squared to update. I tried a lot of things to fix this issue but could not find an answer, the only way i could update a2 was to temporarily disable comodo and then it a2 would work. I recently installed avira antivirus and found i had the same problems with updating.
I finally found the answer to why i could not update. I had earlier blocked svchost.exe from accessing the internet. I thought i would let svchost through as i was running out of ideas as what to do, then i found a2 and avira can now update. I am posting this as i have fixed the problem and this maybe useful to other people who might suffer update problems.