Answer: Safe mode startup, also known as "safe startup", stops sampling of all target databases by the Foxhound Monitor when Foxhound is started, and then temporarily disables most Monitor functionality. This sometimes helps if Foxhound is unresponsive when it starts.

Here's how you can turn safe mode startup on and off to "reset" Foxhound:

1. Stop Foxhound.

2. Turn on safe mode startup by creating a text file named startup.txt containing these exact 4 characters

   safe

   and placing that file in the Foxhound installation folder.

   By default, Foxhound is installed in this location on Windows XP:

   C:\Documents and Settings\All Users\Application Data\RisingRoad\Foxhound2

   and on Vista and Windows 7 it is here:

   C:\ProgramData\RisingRoad\Foxhound2

3. Start Foxhound. All the Monitor sessions will now be stopped, and most Monitor functionality will be disabled (the History page will still work, however).

4. Stop Foxhound.

5. Turn safe mode startup off by deleting or renaming the startup.txt file described above.

6. Start Foxhound. All the Monitor sessions will still be stopped, but all Monitor functionality will be available again.

See also...
How do I start Foxhound in "debug mode"?
How do I see Foxhound diagnostics, errors and exceptions?
Why is Foxhound unresponsive when it starts?
How do I see Foxhound diagnostics, errors and exceptions?