Juri Strumpflohner
Juri Strumpflohner Juri is a full stack developer and tech lead with a special passion for the web and frontend development. He creates online videos for Egghead.io, writes articles on his blog and for tech magazines, speaks at conferences and holds training workshops.

Visual Studio: The application cannot start

2 min read

Today I started my Visual Studio 2010 instance by using the "Run as administrator" option (as I often do when using the local IIS server for hosting my webapp). Instead of the VS window I got a nice error message dialog saying
"The application cannot start"
The same with VS2008. When starting them normally, everything worked just fine, but as soon as I tried to run them with admin rights they both failed. They only thing I did today morning was to to install the Microsoft SQL Server Management Studio Express edition which however (for some unknown reason) failed during install and performed a rollback. I have the strange sensation this rollback did "roll back" a bit too much things...
I don't know if you remember, but VS2010 beta had a similar issue as I described here in this post. The solution there was to execute a devenv /resetuserdata operation which is not really the thing you want. Anyway, I tried it (backing up my settings first obviously)...no change. Still the error popped up.

In 2009 a post on the Visual Studio blog described this same issue that was present in the beta 2 version suggesting the reset of the user data. The solution to fix the problem however was a comment given by √ėyvind Gellein. Adapting it to my x64 system, one has to execute the following:
C:\Program Files (x86)\Common Files\microsoft shared\MSEnv> regsvr32 DTE100.OLB
C:\Program Files (x86)\Common Files\microsoft shared\MSEnv> regsvr32 DTE80.OLB
C:\Program Files (x86)\Common Files\microsoft shared\MSEnv> regsvr32 DTE80a.OLB
C:\Program Files (x86)\Common Files\microsoft shared\MSEnv> regsvr32 DTE90a.OLB
C:\Program Files (x86)\Common Files\microsoft shared\MSEnv> regsvr32 DTE90.OLB

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