I've been having problems with WFP errors for quite some time and have been active on the long thread on it. Around Sept. 22 I stopped getting the WFP errors on shut down but a new problem developed at that time. I mentioned it in a post on the other thread and read that another person has a similar issue. Don't know if this problem is related to the other issues or not so I thought I'd try a new thread. On start up, I am now getting the following note in the event log: "**\SVCHOST.Exe pid (1660) contained an unsigned or corrupted code and was blocked from performing a privileged operation with a McAfee driver". From what I can tell, McAfee and everything else is working ok. The pid number varies. Anything to be concerned about?
I had been receiving "516 errors" multiple times daily, but yesterday for the first time I got the same error you are reporting - 514 error - only difference is the PID number on mine was 1244.
I wonder ....
I found a McAfee Corporate KnowledgeBase article about this (or a similar) issue. It's at https://kc.mcafee.com/corporate/index?page=content&id=KB71083
and relates to a different McAfee product, but the 516 issue occurs there too.
The first two scenarios relate to 3rd-party applications and libraries :
The third scenario is rather different. I don't think the MSI.DLL suggestion is relevant (I read the Microsoft KB article and it doesn't look as if it applies) but the basic issue may be that some certificates are missing from your certificate store. If so that would be a very obscure cause.
Microsoft Certificate Stores need updating
To address this issue with regard to MSI.DLL, see Microsoft KnowledgeBase article http://support.microsoft.com/kb/972397. In addition to the files listed, the related fix also installs an associated security catalog file (KBnumber.cat) that is signed with a Microsoft digital signature.
For additional technical information about how Windows updates root certificates in Windows XP SP2 and SP3, see Microsoft TechNet article http://technet.microsoft.com/en-us/library/bb457160.aspx.
For detailed technical information about how Windows updates root certificates in Windows Vista and later, see Microsoft TechNet article http://technet.microsoft.com/en-us/library/cc749331(WS.10).aspx.