I recently applied updates to my 2K8 SBS Server, including .Net Framework and WSUS (via WSUS). Ever since this was done We have been experiencing performance issues on the server along with issues in IIS Application Pools "MSExchangeSyncAppPool", "SharePoint Central Administration" and "WSUSPool" stopping. All of these are reporting using .NET Framework v2.0.50727. Event ID: 5011 Source: WAS A process serving application pool 'MSExchangeOWAAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '8280'. The data field contains the error number. Event ID: 5011 Source: WAS A process serving application pool 'SharePoint Central Administration v3' suffered a fatal communication error with the Windows Process Activation Service. The process id was '10416'. The data field contains the error number.Event ID: 5011 Source: WAS A process serving application pool 'WSUSPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '6484'. The data field contains the error number. I am also getting Event ID's 5009 & 5002 in the System Event Logs, referring to the same Application Pools. There are also frequent entries in the Application Event Log like Event ID: 1000 Source: Application Error Faulting application w3wp.exe, version 7.0.6002.18005, time stamp 0x49e03238, faulting module isapi.dll, version 7.0.6002.18210, time stamp 0x4b806d59, exception code 0xc0000005, fault offset 0x00000000000141ec, process id 0x2058, application start time 0x01cb339b796f9ea8. When users attempt to logon th OWA it is extremely sloww to load up the Login Page (even from https:\\localhost\OWA) from either a client or on the server, when you do finally login it will display as normal. If you select a message it ends up dropping out to the Login Screen again. Whilst this may be related users are only intermittently receiving synchronisations (email, contacts and calendars) on their mobile phones. Your help will be appreciated in trying to resolve this issue.

You have a lot more going on than Exchange here. I recommend you post your question in an SBS forum. On Wed, 4 Aug 2010 08:02:10 +0000, erwjoh wrote: > > >I recently applied updates to my 2K8 SBS Server, including .Net Framework and WSUS (via WSUS). Ever since this was done We have been experiencing performance issues on the server along with issues in IIS Application Pools "MSExchangeSyncAppPool", "SharePoint Central Administration" and "WSUSPool" stopping. All of these are reporting using .NET Framework v2.0.50727. > >Event ID: 5011 Source: WAS A process serving application pool 'MSExchangeOWAAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '8280'. The data field contains the error number. > >Event ID: 5011 Source: WAS A process serving application pool 'SharePoint Central Administration v3' suffered a fatal communication error with the Windows Process Activation Service. The process id was '10416'. The data field contains the error number.Event ID: 5011 Source: WAS A process serving application pool 'WSUSPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '6484'. The data field contains the error number. > > > >I am also getting Event ID's 5009 & 5002 in the System Event Logs, referring to the same Application Pools. There are also frequent entries in the Application Event Log like > >Event ID: 1000 Source: Application Error Faulting application w3wp.exe, version 7.0.6002.18005, time stamp 0x49e03238, faulting module isapi.dll, version 7.0.6002.18210, time stamp 0x4b806d59, exception code 0xc0000005, fault offset 0x00000000000141ec, process id 0x2058, application start time 0x01cb339b796f9ea8. > >When users attempt to logon th OWA it is extremely sloww to load up the Login Page (even from https:\\localhost\OWA) from either a client or on the server, when you do finally login it will display as normal. If you select a message it ends up dropping out to the Login Screen again. Whilst this may be related users are only intermittently receiving synchronisations (email, contacts and calendars) on their mobile phones. > >Your help will be appreciated in trying to resolve this issue. > Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

I get the same error: Event ID: 5011 Source: WAS A process serving application pool 'MSExchangeOWAAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '2908'. The data field contains the error number. When i get the login to the OWA i try to login, after 10-15 seconds, it looks like the page is loaded, but i get the login screen again and a message in the top of the login page telling me: "A timeout occured for the session, Outlook Web Access automatically closes the connection to the mailbox after a period of time without activity to protect your account against unauthorized access. Type username and password again." Then the Event ID: 5011 is thrown in the event log. We cannot access OWA anymore cause of this. It did work properly when it was first installed. I have no clue what went wrong and where. Please Help Regards Henrik