Mit tegyek ebben a helyzetben?

[link]

"I too suddenly started receiving this message when trying to update Acrobat reader and AVG antivirus. The above solutions did not apply in my case since I only have 1 user account (Administrator) on my stand-alone PC running Win XP service pack 3.

The problem seemed to be linked to Windows installer

"The system administrator has set policies to prevent this installation"

After much searching I found this solution that worked

start > run regedit

Browse the registry to HKLM\Software\Policies\Microsoft\Windows\Installer

Create: DisableMSI Type: REG_DWORD value = 0 (0 should allow you to install it was originally 1)

(In my case the value had been set to 2 so I changed it to 0)"