Hi a server of ours gets this kinda events all the time, and the Microsoft.SBS.UpdateServices.SyncSecurity.exe runs high CPU. The Event comes back around every 10 Min. I tried the following things; C:\Windows\Microsoft.NET\Framework\v2.0.50727 and C:\ProgramFiles\UpdateServices\WebServices\ServerSyncWebService. Change security permissions for Network Services so it could Modify. It was a trick i followed but didnt work. Someone got a clue? Source: ASP.NET 2.0.50727.0 Web Event EventID: 1309 Event code: 3001 Event message: The request has been aborted. Event time: 8/23/2011 3:17:51 PM Event time (UTC): 8/23/2011 1:17:51 PM Event ID: 1ddb1b723fea44109ba65ee96b332926 Event sequence: 8 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1539092886/ROOT/ClientWebService-7-129585779799967269 Trust level: Full Application Virtual Path: /ClientWebService Application Path: C:\Program Files\Update Services\WebServices\ClientWebService\ Machine name: SBS***** Process information: Process ID: 37472 Process name: w3wp.exe Account name: NT AUTHORITY\NETWORK SERVICE Exception information: Exception type: HttpException Exception message: Request timed out. Request information: Request URL: http://SBS*****:8530/ClientWebService/client.asmx Request path: /ClientWebService/client.asmx User host address: 192.168.**.23 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE Thread information: Thread ID: 1 Thread account name: NT AUTHORITY\NETWORK SERVICE Is impersonating: False Stack trace:

I recommend to double check the WSUS prerequisites: registration of ASP, security and IIS settings,... Unfortunately you have given no information about the history. Is it new phenomenon, or old one? Have you tested something or changed configuration. How did you install and configure WSUS. It would be better to solve this problem in WSUS forum.