Ever since AVG transitioned from its version 7.5 to version 8.0, and now 8.5, I have a lot of problems with it--especially with its updating. Most of the times that I tried to update it, I kept getting server connection failure messages.
AVG's inability to co-exist with the new release of jv16 PT was the last straw with AVG for me. I uninstalled AVG and installed Avira AntiVir, which is another free anti-virus program. Avira AV co-exits with jv16 PT just fine.
I only wish I had dumped AVG in favor of Avira AV a long time ago when I read some objective reviews saying that Avira AV is a better product than AVG, anyway. It is. A full system scan with AVG took nearly two hours on my computer. A full system scan with Avira AV takes about 30 minutes. Never any problems with updating Avira AV, either.