BaseCamp asks for unsetting compatibility mode

You can right-click a program exe file, select Properties -> tab
Compatibility. There, you can unset the mode.


Even if an older version of Basecamp has been uninstalled, a compatibility mode setting may still be involved. It is Windows that writes this setting in the registry. Basecamp does not check for this Windows setting or remove it when it uninstalls.

From the taskbar, click on the Start button
Windows 7 and Windows Vista - In the field just above Start type: REGEDIT
Press the Enter key on the keyboard
Click Yes in the User Account Control dialog (if necessary)
In HKEY_CURRENT_USER browse to:
Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
To do this, click the triangle or plus sign next to each item listed until you get to Layers
Click Layers to select it
Note: You may want to look in the right pane to see if things besides Basecamp are listed and you may need to expand the Name column to see the path (this is usually C:\Program Files\Garmin\Basecamp); if multiple items are listed, click just the Basecamp one to select it
Press Delete
Click Yes in the Confirm Key Delete dialog.