Closed Bug 1460730 Opened 3 years ago Closed 3 years ago

Very slow at windows 10 build 1803


(Firefox :: Untriaged, defect)

60 Branch
Not set





(Reporter: bruno.devpod, Unassigned)


User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36

Steps to reproduce:

Trying to open any webpage after upgraded my windows 10 to build 1803

Actual results:

It seems like some kind of connectivity problems, I see the status bar stay on Starting TLS Handshaking for very long time, any site takes 10-20 minutes just to open (if it happens). When I try the same site over Edge or Chrome everything works fine.

Expected results:

It should open any site fast.
Just for additional information, I had to submit this bug through Chrome. I tried to open this bug page and it took 2 minutes to load, always stuck at the "Waiting for ..."
It seems to be related to establishing the connection, once it establishes it is fast, like in a download for example, it takes very long to start, and after that it downloads fast. But it makes the browsing impractical obviously.
Hi Bruno,

Could you please provide the Firefox build ID from about:support?

Also, please try with a new clean Firefox profile ( as well as safe mode (, to eliminate custom settings as a possible cause and report back the results. 

Flags: needinfo?(bruno.devpod)
My Firefox build ID is 20180503143129

But I also had this problem with Firefox 59. The update to 60 didn't help.
Flags: needinfo?(bruno.devpod)
I did the "Refresh Firefox" and it appears to have solved the problem.
Based on comment 5 from the reporter, I'm marking this as Resolved WFM.
Closed: 3 years ago
Resolution: --- → WORKSFORME
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