VisualStudio 2010 Installer | RemovePreviousVersion behavior in Windows 7

Installer Version 1.0.7

• UpgradeCode = GuidXYZ
• ProductCode = GuidABC
• RemovePreviousVersions = true
• DetectNewerInstallations = false

Installer Version 1.0.8

• UpgradeCode = GuidXYZ
• ProductCode = GuidDEF
• RemovePreviousVersions = true
• DetectNewerInstallations = false

In Windows XP installing 1.0.8 removes 1.0.7 successfully.

In Windows 开发者_开发问答7 64 bit Professional installing 1.0.8 does not remove 1.0.7. I still see the entry in the installed Programs.

What am I missing here?

Environment:

• Visual Studio 2010 Professional SP1
• .NET 4.0

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Do both versions use the same installation type (per-user or per-machine)? This is handled through the ALLUSERS property. If the installation type is not the same, the upgrade is not performed.

You can also try creating a log and see what happens during FindRelatedProducts action.