Exchange 2010 – “The certificate status could not be determined because the revocation check failed.”

Thanks to: https://www.petenetlive.com/

Problem

Seen on Exchange 2010 (with or without service packs) when you access the internet through a proxy server. Note: Exchange does NOT take its proxy settings from Internet Explorer.

Solution

1. To prove that the proxy is the problem drop to command line and issue the following command:

netsh winhttp show proxy

If it says “Direct Access (no proxy server)” and you have a proxy server then that’s your problem.

2. Issue the following command:

netsh winhttp set proxy proxy-server=”http={proxy IP}:{port};https={proxy ip}:{port}” bypass-list=”*.YourDomain.com”

3. Note: If at this point it all goes wrong (If you get it wrong, then the Exchange Management Console wont open! test it to make sure). To revert back to “no proxy”, issue the following command:

netsh winhttp set proxy proxy-server=”http={proxy IP}:{port};https={proxy ip}:{port}” bypass-list=”*.YourDomain.com”

You only do this if it’s broken something!!

4. All being well your certificates should now display correctly.