I support servers at multiple locations and recently a number of the servers have stopped pulling updates from WSUS. They either appear as "Not yet reported" or have an old Last reported date. This issue appears to be proxy related, even though these servers do not go through a proxy. Below is the extract from one of the Windowsupdate.log files -
WARNING: Send failed with hr = 80072f78.
WARNING: SendRequest failed with hr = 80072f78. Proxy List used: <ISAProxySrv:3141> Bypass List used : <(null)> Auth Schemes used : <>
FATAL: SOAP/WinHttp - SendRequest: SendRequestUsingProxy failed. error 0x80072f78
Last proxy send request failed with hr = 0x80072F78, HTTP status code = 0
Caller provided proxy = No
Proxy list used = ISAProxySrv:3141
Bypass list used = <NULL>
Caller provided credentials = No
Impersonate flags = 0
Possible authorization schemes used
I assume the issue is with that "Proxy List used: <ISAProxySrv:3141>. I have no idea where that is coming from.
I've attempted to clear the setting using netsh winhttp commands, and a show proxy returns with Direct Access (no proxy server). In IE, the Auto Detect is not checked. I've researched and read through a lot of the sites related to that 80072f278 error, and I've yet to find anything that is fixing this problem. It started happening on 8/27/2014 on all of the servers at one site, and one 1 or 2 servers at 4 other sites.
I am at a loss...