Opened 7 years ago

Closed 6 years ago

#9582 closed defect (fixed)

HTTPS-Everywhere 4.0dev10 slows down or prevents https page loads

Reported by: cypherpunks Owned by: pde
Priority: Medium Milestone:
Component: HTTPS Everywhere/EFF-HTTPS Everywhere Version: HTTPS-E 4.0dev10
Severity: Keywords:
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:


Since HTTPS-E 4.0dev10 page load times of https-websites have increased significantly. Sometimes https-websites fail to load completely.


  1. Install HTTPS-E 4.0dev10 (or upgrade from 4.0dev9).
  2. Restart Firefox.
  3. Try to load several https-sites (with a corresponding HTTPS-E rule enabled) in parallel, in different tabs (like;;;;;;; -- typed with or without https-prefix).
  4. If everything seems to work okay, restart Firefox and repeat step 3 once or twice.

Actual Results: page loads take often more than 1 minute, they sometimes even result in a Firefox connecting error ("The connection was reset").

Expected Result: page loads should be successful and should not take more than a couple of seconds.

Downgrading to HTTPS-E 4.0dev9 or 3.4.1 resolves the problem for me. Disabling all other add-ons doesn't resolve the problem with 4.0dev10.

Tested against: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:25.0) Gecko/20100101 Firefox/25.0

Child Tickets

Change History (3)

comment:1 Changed 7 years ago by willo

I experienced the same symptoms. Specifically, I was on 4.0dev-8, upgraded to 4.0dev-11, and experienced very long delays loading webpages, especially those with allot of third-party content, like "". When I used the plugin to "Disable HTTPS Everywhere", the delays disappeared. I downgraded to 4.0dev-10, which had the same symptoms, and then downgraded to 4.0-dev-9, which did not have the symptoms. Not wanting to be stuck using an "old" version, I tried 3.4.1, which did not have these symptoms.  For now, I'm using 3.4.1, hoping that upgrades to 3.x won't introduce this bug.

User_agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:23.0) Gecko/20100101 Firefox/23.0

comment:2 Changed 7 years ago by cypherpunks

In my case it seems like this problem is resolved in the latest 4.0dev12 update. Maybe #9713 was the culprit (fixed in 4.0dev12).

Tickets like #9622 and #9692 sound like duplicates of this ticket.

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:26.0) Gecko/20100101 Firefox/26.0

Last edited 7 years ago by cypherpunks (previous) (diff)

comment:3 Changed 6 years ago by jsha

Resolution: fixed
Status: newclosed
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