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[tor-bugs] #26514 [Applications/Tor Browser]: intermittent updater failures on Win64 (Error 19)



#26514: intermittent updater failures on Win64 (Error 19)
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     Reporter:  mcs                       |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 When testing updates from Tor Browser 8.0a8 (ESR52) to the 8.0a9 release
 candidate (ESR60), Kathy and I encountered a failure when trying to update
 a Win64 browser that was using an obfs4 transport. The error was 19
 (CERT_VERIFY_ERROR). We cannot reproduce this error on other platforms,
 and the mar file signature does in fact seem to be correct.

 When testing with the same mar file and running updater.exe manually via a
 CMD shell, we saw the same error. However, after several attempts the
 update succeeded. It seems to fail about 4/5 of the time. Georg pointed
 out that this sounds a lot like a problem that was reported on tor-talk a
 earlier this year:

 https://lists.torproject.org/pipermail/tor-talk/2018-January/043930.html

 Note that this is a bug in our ESR52-based Tor Browser; we will need to
 determine if the bug still exists in an ESR60-based browser (and look for
 the cause).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26514>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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