Hi there If you try to install 3CX Assistant 9 to any other location other than the C: drive default location it seems to fail. If i select the D: drive it fails but if i leave it at the default location on the C: drive it works. All options including Outlook integration and the phone are selected. This is on Windows 7 Enterprise using an administrator account. EDIT: It seems as though it is the VSO redistributable that has the issue. I can get it to work by leaving the install location as C: and running the VSO install to the end then changing the 3CX install location to the D: drive and starting that portion of the install.