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Editorial Team
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Asked: 2026-05-28T02:54:18+00:00

I’ve developed a simple installation package using WiX that installs an assembly called WBRT.Configuration

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I’ve developed a simple installation package using WiX that installs an assembly called WBRT.Configuration into the Global Assembly Cache (GAC). While the file installs, it is not removed when the package is uninstalled.

I’ve tried running a command prompt as administrator, used msiexec /x specifying the msi filename and msiexec /x specifying the product code.

With the /l*v switch, there is no error:

Executing op: ActionStart(Name=MsiUnpublishAssemblies,Description=Unpublishing assembly information,Template=Application Context:[1], Assembly Name:[2])
Executing op: AssemblyUnpublish(,,AssemblyType=1,,AssemblyName=WBRT.Configuration,version="1.0.0.0",culture="neutral",publicKeyToken="361AD75BADC53912",processorArchitecture="MSIL",Descriptor=2-(xWui~z@UnhQuo-~Gh>S.OwM9Kim9x0ul%Ore=9)
Executing op: ActionStart(Name=UnpublishFeatures,Description=Unpublishing Product Features,Template=Feature: [1])

WiX File element

<File Id="filB7155C3E9A241BEAFE09533364964732" KeyPath="yes" Assembly=".net" Source="$(var.Configuration.TargetDir)\WBRT.Configuration.dll" />

MsiAssemblyName table in Orca

MSIAssemblyName

File in the GAC

File in GAC

Version tab of the file in the GAC

Version

I’m completely stumped. Does anyone have ideas?

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1 Answer

  1. Editorial Team

    First, verify that your assembly is not locked by another process
    via gacutil.exe

    gacutil /u WBRT.Configuration

    If the above is OK make sure the file parent container has no permanent flag –
    Permanent="no"

    <Component Shared="yes" Permanent="no" Guid="PUT-GUID-HERE" >
    <File Id="filB7155C3E9A241BEAFE09533364964732" KeyPath="yes" Assembly=".net" 
       Source="$(var.Configuration.TargetDir)\WBRT.Configuration.dll" />
</Component>
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