Hi,
I just wanted everyone to know that I solved the problem, in my case anyway (XP SP3 computer). Even though PC Tools Firewall Plus was not denying any Avast services...after completing a manual restore point and backing up the registry first, I completely removed the firewall (using CCleaner's uninstall utility in safe mode and then manually went through the registry and removed everything related to PC Tools and PCTFW...also in safe mode). I then re-downloaded the firewall (also in safe mode). After doing this I know longer got any of the error 10022 errors that started my thread (under 4.
AND the Webshield for 5.0 was in service...no longer unsecure. I've used Avast for years with little problems and am so glad to be able to continue using it. I'm newer to PC Tools, but like it as well so far. I don't know why I got the 10022 errors to begin with under 4.8, nor why after the upgrade to 5.0 the Websheild protection wouldn't engage, but this fixed my problem. Let's hope Avast & PC Tools continue to co-habitate!
LTS
Edit: added to the subject line to include 5.0 Webshield error