We are continually having problems with VS 2010 hanging and unable to operate intermittently on our development machines. The issue is not with vs 2010 itself but any program that relies on .NET. The following are the entries in the event log which I think are due to the issue, the key one is ".NET Runtime version 2.0.50727.5420 - Fatal Execution Engine Error (5A5DAE0A) (0)". Can anyone provide any help to resolve this? Log Name: Application Source: .NET Runtime Date: 15/07/2012 09:56:05 Event ID: 1023 Task Category: None Level: Error Keywords: Classic User: N/A Computer: Dev01.sps01.conretec.com Description: .NET Runtime version 2.0.50727.5420 - Fatal Execution Engine Error (5A5DAE0A) (0) Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name=".NET Runtime" /> <EventID Qualifiers="0">1023</EventID> <Level>2</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-07-15T08:56:05.000000000Z" /> <EventRecordID>62170</EventRecordID> <Channel>Application</Channel> <Computer>Dev01.sps01.conretec.com</Computer> <Security /> </System> <EventData> <Data>.NET Runtime version 2.0.50727.5420 - Fatal Execution Engine Error (5A5DAE0A) (0)</Data> </EventData> </Event> Log Name: Application Source: Application Hang Date: 15/07/2012 09:56:05 Event ID: 1002 Task Category: (101) Level: Error Keywords: Classic User: N/A Computer: Dev01.sps01.conretec.com Description: The program devenv.exe version 10.0.30319.1 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel. Process ID: 154c Start Time: 01cd625f49f398e1 Termination Time: 10 Application Path: C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe Report Id: e7495110-ce5a-11e1-9ad7-000c29fc03ff Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Hang" /> <EventID Qualifiers="0">1002</EventID> <Level>2</Level> <Task>101</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-07-15T08:56:05.000000000Z" /> <EventRecordID>62169</EventRecordID> <Channel>Application</Channel> <Computer>Dev01.sps01.conretec.com</Computer> <Security /> </System> <EventData> <Data>devenv.exe</Data> <Data>10.0.30319.1</Data> <Data>154c</Data> <Data>01cd625f49f398e1</Data> <Data>10</Data> <Data>C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe</Data> <Data>e7495110-ce5a-11e1-9ad7-000c29fc03ff</Data> <Binary>55006E006B006E006F0077006E0000000000</Binary> </EventData> </Event>

Please refer following threads and see if suggestions given in those help in your scenario NET Runtime version 2.0.50727.3603 - Fatal Execution Engine Error Encountered for Remoting Application developed in .NET 2.0 http://social.msdn.microsoft.com/Forums/en/clr/thread/5256fef0-89c6-45f2-ad82-97c41684c54d Visual Studio 2010 randomly crashing http://social.msdn.microsoft.com/Forums/en/vswpfdesigner/thread/2cfaf28f-80af-49ee-8408-07b4a8e0e964 If they do not help, please create new thread in either Visual Studio Developer Center > .NET Framework Forums http://social.msdn.microsoft.com/Forums/en/category/netdevelopment OR Visual Studio Developer Center > Visual Studio Forums > Visual Studio WPF/SL Designer forums http://social.msdn.microsoft.com/Forums/en/vswpfdesigner/threadsI do not represent the organisation I work for, all the opinions expressed here are my own. This posting is provided "AS IS" with no warranties or guarantees and confers no rights. - .... .- -. -.- ... --..-- ... .- -. - --- ... ....