Quote:
Originally Posted by AnotherCat
...if I get a chance I'll have a look at a 64 bit PC and see what its relevant permissions are when I get home tonight...
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Came home early to get away from the wind and rain

, so here it is.
Key field order below is Principal|Access|Inherited from|Applies to:
Users|Read|MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Installer|This key and subkeys
Administrators|Full Control|MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Installer|This key and subkeys
SYSTEM|Full Control|MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Installer|This key and subkeys
CREATOR OWNER|Full Control|MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Installer|Subkeys only
ALL APPLICATION PACKAGES|Read|MACHINE\SOFTWARE\Microsoft\Windows\C urrentVersion\Installer|This key and subkeys
Note: Here "Administrators" are user accounts given Administrator priviledges, not the normally hidden elevated "Administrator" (n.b. only Win 7 and Win 8 have the normally hidden elevated administrative Administrator).
EDIT: \CurrentVersion\ is all one word, NO spurious spaces in it as it insists on displaying in the post for me e.g. \Current Version\" is incorrect.