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Can't enable Firefox sync, getting "Unexpected error"

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I can log in from other hosts on the same network. I can log in from this host to support.mozilla.org. I tried to clear the Firefox cache / browsing data.

Still, trying to enable Firefox Sync always results in an "Unexpected error" message.


UPDATE

I eventually tried to set the MTU setting for my network device and reducing that has solved the issue. This command did it for me:

  1. ifconfig em1 mtu 1456
I can log in from other hosts on the same network. I can log in from this host to support.mozilla.org. I tried to clear the Firefox cache / browsing data. Still, trying to enable Firefox Sync always results in an "Unexpected error" message. UPDATE I eventually tried to set the MTU setting for my network device and reducing that has solved the issue. This command did it for me: # ifconfig em1 mtu 1456

Modified by dbb