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I have just installed Tor Browser package (Windows), using my admin account (installation failed with a normal account due to insufficient privileges. I am able to start the Tor browser ok with the admin account. However, when I switch to my regular non admin account and try to start the Tor browser, I get that error message that says Firefox is already running. I have attempted to fix this particular problem from Mozilla help, but they just don't work. (There is a firefox profile lock file that needs to be deleted; I did this and it made no difference). So can you only run Tor browser from the same account that you install it in? If this is the case, then I'll need to un-install and then re-run the installer from an elevated command prompt, however, I tried to un-install Tor-Broswer, but I can't find an un-installer, and the Tor Browser doesn't appear in the application install list (appwiz.cpl).

Please assist if you can, thanks.

  • 1
    Where did you install it to? Also there is no uninstaller, just delete the folder. The bundle .exe is just a compressed archive that simply unpacks itself to the destination set. Make sure you install it to a folder that all users has permission to use and access. What you mention is very typical for when you install it and windows 'locks' it because it's only enabled through administrator access. – Stig Atle Steffensen Sep 4 '14 at 18:33
  • Thanks for that. I just moved the folder to the public user profile. Tor Brower now works fine from the non admin account. It must have failed the first time because originally I put it in program files, which needs admin access, for write operations which I assume is necessary for Tor to run. – Plastikfan Sep 5 '14 at 11:13
  • Move the Tor folder to C root or some other folder without user attachment. – Arved Alcántara Dec 10 '17 at 9:25
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A solution that doesn't break all your shortcuts:

  • Right-click the Tor Browser folder (which you probably installed to Program Files)
  • Properties --> Security --> (Your username) --> Edit --> (Your username) --> Allow full control
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This was caused by the fact that the Tor Browser was running from Program Files. It would have been useful in the help to say that the Tor Browser bundle should be copied to a location with write access. Non admin accounts can't write to Program Files, which is why it failed. I just copied to /User/Public, and all is fine.

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Strictly speaking, the only folder you need to open up access to is

%installfolder%\Browser\TorBrowser\Data

That's where the caches and profile information is kept. No need to open up security on directories you don't need to.

  • The only folder I've changed and got a feedback! But that worked out for me using Debian installation of Tor. – user27816 Sep 25 at 20:13

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