SharePoint 2010 installation on Windows 7 - Product Config Wizard fails in step 2 with System.FormatException

Today I was trying to install SharePoint 2010 enterprise on my Windows 7 laptop. The product configuration wizard was failing with the following error in Step 2 [creating configuration database].


The exception was:

System.FormatException: Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).   at System.Guid..ctor(String g)   at Microsoft.SharePoint.Administration.SPFarm.GetInstalledProductIds()

Reason:

The following registry key had an "invalid" value "0" for the registry name {90140000-110D-0000-1000-0000000FF1CE} :

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server extensions\14.0\WSS\InstalledProducts

Solution:


This is the key that is used to determine the current edition (Foundation, Standard,Enterprise..) of SharePoint installed. The correct value of this should be:



88BED06D-8C6B-4E62-AB01-546D6005FE97 - For Enterprise trial
D5595F62-449B-4061-B0B2-0CBAD410BB51 - For Enterprise licensed
B2C0B444-3914-4ACB-A0B8-7CF50A8F7AA0 - For Standard trial
3FDFBCC8-B3E4-4482-91FA-122C6432805C - For Standard licensed

Changing this solved the problem.