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Posted 22 Mar 2013

ASP.NET MVC 3 Tools Update Setup Fails with Fatal Error (0x80070643)

, 22 Mar 2013
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A workaround for error 0x80070643 occurring during the installation of the ASP.NET MVC 3 Tools update

Today, I tried to install the ASP.NET MVC 3 Tools Update. The installation always failed with a fatal error(0x80070643). The log file sent me to the ASP.NET Webpages.msi logfile which had the wonderful error message

There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.

The Eventlog had even some additional but equally useless information:

Application: WebConfigCA.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.ArgumentException
at System.Web.Configuration.VirtualDirectoryMapping..ctor(System.Web.VirtualPath, System.String, Boolean, System.String)
at System.Web.Configuration.VirtualDirectoryMapping..ctor(System.String, Boolean)

After some digging, I found a KB article describing the same error during the installation of MVC 3 or WebPages and the first suggested workaround helped:

Remove the trailing backslash from the following Registry keys:


I guess someone at Microsoft missed the Path.Combine method. ;)


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Markus Greuel
Germany Germany
No Biography provided

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QuestionThank You Pin
fpmorrison22-Mar-13 6:11
memberfpmorrison22-Mar-13 6:11 

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