There are a lots of pages in internet which deals about wsus problems with windows 8.1 but mine is not covered. I have a wsus 3.0 sp2 installed on a 2008 server and it has all the necessary patches for windows 8 (KB2720211 and KB2734608) In the domain there are win xp, win 7 and 3 win 8.1 computers. Cannot say if win 8 computers can download and apply updates from wsus, may be it will be the subject of a new post here. Inside wsus selecting a computer group I can see a column with a header which translated from my language sound like "Last Status report". All 3 Win 8.1 computers are switched on daily and there are not major and evident configuration differences between them. Unfortunately only one them seems to send the "Status report" daily.
On one of the 'lazy' computer I performed the following steps:
Net stop wuauserv
rd /s %windir%\softwaredistribution\
Net start wuauserv
wuauclt /resetauthorization /detectnow
The first command says that wuauserv was not running. Anyway the "Last status report" in wsus is finally updated with the date and time of the manual intervention. After that it doesn't change any more till the next time I perform a new manual intervention.
I checked and compared the most relevant registry keys between the 'lazy' and the smart computer but found nothing useful. Don't know what to do.
Here is a possibly related event:
Windows Error Reporting
Event Id 1001
Data: 24/01/2014
Ora: 11.51.13
WindowsUpdateFailure2; Non disponibile; 0; 7.9.9600.16403; 80246003; 6D629889-8D3F-4F26-929A-E08B8F363F49; Download; 101; Managed {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}; 0; ; ; ; ; ; ; 0; 7086d3c9-84e5-11e3-be7b-7446a08f08b8; 262144;
and here the content of ReportingEvents.log
{3BAE0BA3-0470-4239-8F5D-D49549F5FC5A} 2014-01-24 11:51:08:012+0100 1 147 [AGENT_DETECTION_FINISHED] 101 {00000000-0000-0000-0000-000000000000} 0 0 Windows Update Command Line Success Software Synchronization Windows Update Client successfully detected 2 updates.
{4976B83B-B852-4323-B0EE-BEAAA51BE717} 2014-01-24 11:51:08:012+0100 1 156 [AGENT_STATUS_30] 101 {00000000-0000-0000-0000-000000000000} 0 0 Windows Update Command Line Success Pre-Deployment Check Reporting client status.
{6DD15230-6226-44B3-AD66-22E1A141AB27} 2014-01-24 11:51:09:259+0100 1 161 [AGENT_DOWNLOAD_FAILED] 101 {79AE03DF-D6EB-4DE2-B59F-37E963D7A69E} 101 80096004 AutomaticUpdates Failure Content Download Error: Download failed.
{682DBBA8-10D6-4B40-AD37-F30539186AE6} 2014-01-24 11:51:10:134+0100 1 161 [AGENT_DOWNLOAD_FAILED] 101 {6D629889-8D3F-4F26-929A-E08B8F363F49} 100 80246003 AutomaticUpdates Failure Content Download Error: Download failed.
wsusutil checkhealth
on the WSUS server to check if there is a problem with the server itself before you start investigating on the client.