How To Find The Path Of The Current Profile Folder In Mozilla Firefox 57.0.4 64bit On Windows 10 Home x64 1.0 Stable:
Mozilla Firefox uses profiles to keep the data of each user seperate. Each profile has it's own folder. These steps show how to locate the folder of the currently active profile.

Steps:
- Open Mozilla Firefox.
- In Mozilla Firefox, in the address bar, type "about:support", and press "enter".
- On the "about:support" page, under "Application Basics", find "Profile Folder" (it's about half way down the left-hand list), and click "Open Folder".
- In the Windows Explorer instance which was previously opened, the address bar displays the full path to Mozilla Firefox active profile folder.
- Close Windows Explorer.
- Close Mozilla Firefox.

Notes:
- Tested on Mozilla Firefox 57.0.4 64bit.

Authors:James Daniel Marrs Ritchey
License:Comprehensible Open License 1.0
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Comprehensible Open License 1.0:

Material published under this license can be modified, forked, incorporated into other works, and distributed, provided the material remains under this license. Material published under this license is free of charge! Material published under this license is bound to the license release number it was published under. Material published under this license is provided as is. The author of material published under this license shan't be held liable for any negative occurrences that arise from use of the material the author published under this license.
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