THis is very urgent - if I can't get a solution today I'll be forced to do a full restore from backup to try and resolve the issue.
We have Windows SBS 2008 running Exchange 2007. A little while ago I installed Avast! Business Protection Plus trial edition on the server. This caused issues with Exchange server - sending mail was failing because the antivirus plugin was not working. I removed Avast! from the server.
Later I installed Vipre Antivirus - again a trial version. This antivirus does not have any form of Exchange integration it is simply an active shield that catches viruses. Deployed on the server, everything seemed to be okay.
Today, the server's email is working sporadically, and we can't access our intranet website, outlook web access, etc.
It looks like a lot of w3wp.exe threads are consuming all of the available memory on the server and it is causing everything to fail.
The server's "remote web workplace" website is completely unavailable - it times out when trying to access it.
I disabled Vipre and stopped the service, but it has had no effect.
When I reboot the server, everything *appears* to work for a little while, but after a few hours it all slows down until nothing is responding again.
If I try and stop the "World Wide Web Publishing" service, it tries to stop for about a minute and then services.msc throws up an error "Error 1053: The service did not respond to the start or stop request in a timely fashion", and then I can't stop anything anymore - all of the menu items are grayed out.
I can't manually terminate any w3wp.exe processes, because it says "Access Denied".
Where do I being diagnosing this problem? Has anybody seen this before?