I am trying to update a server with the SP1 anti virus but I am getting an error on install. The server was just recently updated to SP1. I have tried running vulscan /installav /showui and that is where I see the failed message. Test test further I also did a uninstallwinclient -forceclean. I used the wscfg32 command to re-install the client with the same results. If I run the msi, it looks like it installs but the services never start.
Reading through the articles from Kasperski indicate that Microsoft released a root certificates update that was later pulled back.
http://forum.kaspersky.com/lofiversion/index.php/t80417.html. This doc tells you to check the certificate chain on the avp.exe file You may find a problem with the certificate chain that signs the avp.exe.
Check on your servers that dont work to see if there is a problem with the COMODO Time Stamping Signer on the file. as is found in the following link;
Machines that are having the issue wouldn't open this website like indicated in the prior link: https://support.comodo.com/index.php?_m=downloads&_a=viewdownload&downloaditemid=116&nav=0,30,1,24.
Export the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates from a working machine and import it into one that is broken. Our assumption is that this was applied during one of our server patching cycles.