Hello. I could not sync the iPad, I restored it. Since, cannot install the apps again. Same problem with iPhone. Error 50 and 42408. It happened after I installed Avast antivirus, uninstalled now. Firewall ok. Solution?

A few days ago, I installed Avast to check a file. they were asking questions so I did not complete the installation. I uninstalled and erased the program. Later, when I connected the iPad, I could not sync as usual. I restaured the iPad, but then it could not add the apps: error 50 and 42408. The same with the iPhone which I did not restaure.

Firewall is OK for iTunes.

I suppose the problem comes from an interference with Avast but not sure. Anyway, I do not know what to do to solve it.

Help needed. Thanks.

Renaud (France)