RE: ASP.Net runtime error: failed to start monitoring changes to webs
- From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng[MSFT])
- Date: Fri, 25 Aug 2006 05:58:08 GMT
Hi Morris,
From your description, you're getting "failed to start monitoringchanges....." error when try opening or running an ASP.NET 2.0 web
application from a NAS in vs 2005.
As for this issue, I've ever found some other ones suffering the similar
issue. Have you got any further error message on this, if so would you
provide the complete error message or exception stack?
Is this NAS a UNC share on a remote machine to both machiNe A and machine
B? Or on machine A locally, but remote to machien B?
As far as I know, there are two potential causes here:
1. If the UNC share is remotely to machine B, and you're using VS 2005
filesystem project to mangement the web application in the share, your
current logon account should have sufficient permission to read/write
monitoring that UNC share and the shared root. This is because ASP.NET
runtime(worker process) will moniotring the file changes in the applicaion
folder or root folder(such as web.config file), and if the security
identity doesn't have sufficient permission, it will lead to error.
As a general permission troubleshooting, you can use Filemon tool to trace
the file accessing on machine B to see whether there is such file accessing
failure entry when you try load the project or run it in vs 2005.
2. Since windows UNC share using SMB as network protocol to communication
between client and server machine, and operating system have limitation on
number of SMB requests that can be processed, if the requests at runtime
exceed the limitation(usually on XP box ), you may also get such "failes to
start monitor ..." error.
Here is a knowledge base article descrbing the problem:
#Your ASP or ASP.NET application may restart or you may lose the session
object when more SMB requests exist than the Web server can process
http://support.microsoft.com/kb/843584/en-us
You can have a look at the above things. If you have any new finding or any
other information you wonder, please feel free to let me know.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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