Intermittent connection issues loading/changing site- secure connection failed/site can't be reached

[EDIflyer]

Is anyone else occasionally getting a 'connection down' error from Chrome (or 'Secure Connection Failed' from Firefox) when changing page - if I hit refresh it works fine. At first I wondered if it was the site I was using but have noticed it on multiple different major websites over the past couple of months and not noticed it from other locations where I don't use Three Broadband so does seem to be related to the router/connection (this is via wired Ethernet too, so not a WiFi problem).  I've tried changing DNS server in case that helps but no difference.

It mainly seems to happen when trying to first load a site or (annoyingly) at checkout when a different site is being loaded as part of the checkout process.  It certainly doesn't happen everytime but does happen with reasonable frequency.  I've also noticed I often get it when trying to pull/push from/to Github too and have to do so a number of times for it to work (browsing the Github website works fine).

I'm using a NR5103E with Firmware Version V1.00(ACBJ.0)b14 - I tried rebooting it but to no effect.

[torz77]

FWIW, I use pi-hole and unbound and have for several years. Issue persists (in fact it is particularly bad on the PiHole site, of course).... so count yourself lucky, but don't count your chickens!

[bytespider]

I'm glad that this appears to be working for you. I've had a local DNS resolver running on my network since I joined Three and still encounter this frequently.

[Nameless]

Maybe the differences between your respective setups may be the reason why?

I am led to believe that the provided routers must not be allowed to be last in the network chain as they will interfere with DNS requests sent to them

The provided router DNS options do not work whatsoever as far as I am concerned........

[Nameless]

Unfortunately I can not test this as I do not have a Raspberry Pi however it looks really good 😎

This is definitely useful information and I have saved it in case it vanishes from this side of the internet and in case I need to use it in the future

Thanks for posting this 😁

[EDIflyer]

OP here - have just come on to say goodbye and good luck! Unfortunately 18 months after first raising this issue it was still happening for me.  A VPN helped but was a pain for smart TVs, etc. and I just wanted a decent reliable connection.  Fibre to the premises became available in my area so I've now left Three and moved to a new 1Gbps symmetric service. It's certainly a blessed relief to not have to worry about these SSL errors anymore!  My early termination charges were wiped and I also raised a formal complaint with the Executive Office last year who have looked after things appropriately - for anyone still experiencing issues I would certainly recommend formally logging things and not just rely on posting here.  I'll remain subscribed to the thread out of interest and hope it does get resolved!

[Nameless]

Life gets busy...

To no surprise, the PR_END_OF_FILE_ERROR still exists...

Maybe Three is trying really hard to maintain this issue? I have not seen any significant changes...

[x-c311]

Still no fix for me, I've seen it on my phone as well connected to 5G on the same mast, so its not just a broadband thing

[Nameless]

I just did a quick test

To no surprise, the PR_END_OF_FILE_ERROR still exists...

How are things for you all?

[torz77]

No change, no update, no sign of any work being done to remedy the situation. Surprised? No.

[bytespider]

Yeah it's been really bad for me this morning!