The Path is not of a legal form

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When building a VPC and installing the Outlook client on Windows Server 2008 I have encountered the following error several times:

When asked for the installation location for the Outlook client you get an error messge "The path is not of a legal form".

 This is due to a registry key that is left empty by the server installation.

To fix this do the following:

1. Open the registry editor and navigate to the following registry entry: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\059DD8CB00184F24E99A62CF4D6109FA\InstallProperties]

2. Locate the key Name: InstallLocation and set the Data value to “C:\Program Files\Microsoft Dynamics CRM” (or whatever the install path of the CRM Server is for your image).

3. Start the installation of the Outlook client (no reboot should be required).