Issue

Unable to communicate PatchLink agent client with PatchLink server. It was throwing ‘HTTP problem. The error code is 12057’ error messages in the logs.

Steps taken to resolve the issue
During SSL communication, which PLUS uses to connect with the PatchLink Subscription Server, Windows 2003 Server requires the computer to access the certificate revocation list (CRL) for the company that issued the SSL certificate (in order to verify that the certificate is still valid). The CRL must be accessed via the Internet but as we don’t have the internet on the server that’s why it was throwing the exception.

There are two options to fix the problem either we install the certificate revocation list (CRL) or we disable it from the registry. By disabling it from the registry it will skip to check the certificate revocation list.

I disabled it by doing the below steps.

1. HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\InternetSettingsDo the right click on the InternetSettings -> Click on the Dword Value -> Keyname-CertificateRevocation -> Value-0 

2. HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software PublishingEdit the State Value, Select decimal and put the 146944 value then click ok. 

3. Restart the PatchLink Service from the services console.

  Let me know if you have any questions or queries.