I've just checked gpedit. I don't have the Attachment Manager key. The gpedit is unusbale for me. I'm going to try regedit way. //edit Oh no it asks still. How should the registry value exactly be? I hav this: Code: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations] "LowRiskFileTypes"=".exe" Maybe it requires restart, didnot try it yet.
Bingo. After restart the registry hack works, Annoying dialog is gone. You can consider this problem solved and thank you for the workaround.