Unable to launch the configured Visual Studio Development Web server.Unable to start program 'C:\Program Files\IIS Express\iisexpress.exe

Question

_{Friday, February 19, 2016 8:27 AM}

Microsoft Visual Studio

Unable to launch the configured Visual Studio Development Web server.Unable to start program 'C:\Program Files\IIS Express\iisexpress.exe'.

A component dll failed to load. Try to restart this application. If failures continue, try disabling any installed add-ins or repair your installation.

OK  

All replies (1)

_{Monday, February 22, 2016 3:17 AM ✅Answered}

Hi HariAttri,

When do you get this error?

According to the error message, there has something wrong with your IIS Express configuration. Please try deleting the automatically-created IISExpress folder, which is usually located at %userprofile%/Documents, e.g. C:\Users\[you]\Documents\IISExpress

After run your solution again, the IISExpress folder will be created again automatically. If the problem still exist, please delete this folder and then uninstall IIS Express from control panel and reinstall it.

Besides, based on the suggestion after the error message, please check the ActiveLog.xml under the path of %AppData%\Microsoft\VisualStudio\14.0. This file will log all operations when you operate Visual Studio. Whether there has any error information about which component dll failed to load.

Then please run Visual Studio in safe mode with "Deven.exe /SafeMode" command to prevents all third-party VSPackages from loading when Visual Studio starts, thus ensuring stable execution. If it works fine in safe mode, please uninstall the VS packages one by one to make sure which one causes this problem.

If still can't find out what causes this problem, please repair your Visual Studio to check whether it can fix this issue.

Best Regards,
Weiwei