Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix
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- Revision id: 184706
- Created:
- Creator: Underpass
- Comment: link to mandatory integrity levels (wikipedia) + internal link to SUMO article for drag/drop to desktop
- Reviewed: Yes
- Reviewed:
- Reviewed by: AliceWyman
- Is approved? Yes
- Is current revision? No
- Ready for localization: No
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When running Windows as an Administrator with UAC disabled and the Launcher Process enabled, users running Firefox may experience unexpected behavior.
When the launcher process detects that it is running at a high integrity level, it will force Firefox to run at a medium integrity level. This intentional security feature is intended to prevent malicious code from gaining write access to sensitive areas of the OS. Windows does not allow programs running at a lower integrity level to send data to programs running at a higher integrity level. As a result, users may experience errors when trying to drag and drop a file from Firefox to another application.
How to Verify the Problem
To verify this condition, make sure the user is operating Windows as a full Administrator and has disabled User Account Control (UAC) settings. Enter create a desktop shortcut to a website).
in the address bar and look under Application Basics for the Launcher Process entry. If enabled, you may experience errors when trying to drag and drop a file from Firefox to another application (for example, when you try toHow to Fix
To fix the problem, users have two options.
Re-enable UAC
First, users can re-enable UAC on their PC. To do so, type
in the search field on your taskbar by right-clicking the Start button and selecting Search. Click . To turn UAC on, drag the slider to and click . This option is the most secure fix available.Start Firefox Using the No Deelevate Command
Alternatively, users can solve the issue by launching Firefox using the
command line option either directly from the command line or by editing their Firefox shortcut to do so.Partial Workaround
Copy and Paste often can substitute for drag-and-drop. For example, a user can right-click an image and choose Copy Image, then right-click on the Windows desktop and choose Paste. Where practicable, this is preferable to reducing security by using the
command line option.