Tor became unresponsive for no reason,& immediately firefox became unresponsive.then,Tor crashed,& after about 35 seconds firefox crashed. i wish that firefox would just continue working like it normally does, but unfortunately it doesn't. i had been looking through the Tor folder,& i can't find my session.

now i'm afraid to open Tor.so...

1.where does Tor stores the session?

2.is my session destroyed?is there anyway to recover it???

3 Answers 3


It doesn't store "sessions", this would constitute a persistence of state between uses, which would provide means for linkability between your various browsing sessions. In other words, it would make you trackable and remove much of the protection Tor Browser provides.

Since it doesn't store sessions, there is nothing to be recovered. There is no (reliable*) way to restore it once it has been closed.


If you're suggesting Tor Browser should write to disk, then you should understand that it is designed not to.

Your suggestion that "there's really no difference between reopening tabs vs opening them for the first time" is false, in this scenario Mallory just puts a unique identifier value, specifically assigned to you, in the website address when you first visit. Then the second time you open it (e.g. the tab is restored) the same value is once again in the website address, so Mallory can confidently link the two sessions (it's either you or someone you shared the link with) and use it as an opportunity to reinsert all the other tracking mechanisms that didn't persist.

If you're not concerned about being anonymous and unlinkable, you can disable this through the Tor Button (Green Onion) -> Privacy and Security Settings and unticking Don't record browsing history or website data however you will not be able to restore the previous session.

You should also note that this makes it possible for a local Mallory, with physical access to the device that Tor Browser is run on, to be able to reconstruct your browsing history.

*unless you want to get into memory forensics and you're lucky and haven't overwritten it in memory with other data since.


in preference goto Privacy and Security and uncheck : History > tor open previous session

then it would restarted

and then again in preference goto General at the very beginning check : Startup > Restore previous session

  • This is generally a bad idea. Please see the other answer for a more complete understand of why Tor Browser doesn't do this by default.
    – JSEvans
    Feb 5, 2020 at 21:12
  • 1
    @JSEvans User asked "how?" and not "why?" you should not dictate to users, as there are many situation that security is not concerned and user just want to bypass the censorship .
    – nullqube
    Feb 11, 2020 at 16:15
  • Agreed. Just because you don't like this answer, doesn't mean its not correct.
    – Protofall
    Dec 12, 2021 at 9:32

go to options> privacy & security> history> tor browser will remember history. then go to general> start up> restore previous session.

  • Please add more of an explanation to your answer. Make it easier to understand by clearly responding to the user's questions. Thank you.
    – Swangie
    Jun 1, 2021 at 15:17
  • @Swangie This answer is easy to understand and it perfectly addresses the question. If you need to keep previous session for whatever reason you may have, then this is how you do it.
    – Protofall
    Dec 12, 2021 at 9:31

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