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unable to solve this problem via this error message: "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem."

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I have followed the instructions and it worked temporarily and then got back the same message. I am unable to bookmark anything. Ready to give up!

I have followed the instructions and it worked temporarily and then got back the same message. I am unable to bookmark anything. Ready to give up!

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