Server too busy error Visual Studio

When trying to run my project locally using the VS Development Web Server for a large project, I keep getting the error "Server too busy". How to resolve this? I seem to only get this error for this project.

I have tried many things including:

-attempting to use IIS Express
-also tried the following
<httpRuntime enableVersionHeader="false" executionTimeout="72000" maxRequestLength="4096" minFreeThreads="72" minLocalRequestFreeThreads="88" useFullyQualifiedRedirectUrl="false" />

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-clean and rebuild and run

Anyone else run into this and find a solution? The error sometimes comes up pretty quickly after clicking on Start Debugging and sometimes takes a while before the error comes up. I am using VS 2010.

If I deploy the files to a web server there is no issue.
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mathew_sAuthor Commented:
Interesting. I noticed that on another computer where I only installed VS 2010 the solution runs without issue. I don't get the server too busy error message. But on my main computer with VS2008, VS2010 and VS2012 - I get this error when running in VS2010. So it looks like it may have something to do with the VS2012 being installed. Any comments?
mathew_sAuthor Commented:
Solution: There were an unhandled error which was being masked by this server too busy message. I still had the message come up even after fixing that message so this was my solution on computer with VS2010 and VS2012. Repaired VS2010, after opening project, cleaned solution and rebuilt. Then ran project using IIS Express instead of VS Development server. It takes a while to come up but it does come up now without message. Probably better solution would be to uninstall both VS2012 and 2012 and install in that same order and then retry.

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