Parece ser um marcador que listaria os aplicativos que não podem ser desinstalados.
Parece ter sido discutido com uma solução aqui: link
Open the hidden folder,
C:\$WINDOWS.~BT\
Then, go to
Sources\Panther\
subfolder. Sort files by date.Find file named
<some symbols>_APPRAISER_HumanReadable.xml
Open it in Notepad. This is setup log in XML format.
Search the string:
<Property Name="DT_ANY_FMC_BlockingApplication" Value="TRUE"
.This string is located in Property list "Decision Maker" XML-section.
Look some strings up, there should be XML-value of the "Asset" XML-property.
In "Property-List Type Inventory" section you can find the program path ("lower case long path" XML-attribute).
Uninstall this program, and run setup again.
Repeat these steps, for all founded strings with
BlockingApplication=True
value.