Plusnet Broadband login and Firefox Browser

[#1]

For what it's worth, I CAN log into the PN Member Centre using Google Chrome on my laptop, also using Firefox on my mobile phone, but CANNOT log in using Firefox on my laptop.

[#2]

Firefox on iDevices has to use webkit, so will be different to desktop browsers.

[#3]

Did exactly the same, right down to changing password (without thinking). can access via Chrome, Edge and even Android FF. Deleted all applicable cookies but still no joy - would rather stick with FF but clearly, reading other posts, a spanner has fallen into the works somewhere.

[#4]

It appears to be a problem with the latest version of Windows Firefox with Plusnet. I successfully logged in with Firefox 103.0.1 but, after installing latest upgrade of 105.0.1 I get the invalid login msg from Plusnet. As others have pointed out it is not a problem when using different browsers.

[#5]

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@jab1 wrote:

@SpendLessTime , @Baldrick1 Which version of Windows? Mine was on a W7 SP1 64bit machine.

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Update:

Win 11 Pro 64 Bit

Version 21H2

OS.build 22000.978

Firefox 64 Bit 105.0.1

https://webmail.plus.net works.

https://www.plus.net/member-centre/login does not.

[#6]

Strange - wonder why I have no problem on any of my three platforms?

[#7]

@jab1 youre running Windows 7 arent you ? and is it 64 bit ?

those of us with the problem are Windows 10 or 11 (which will all be 64 bit)

[#8]

Yep, @MisterW , the Windows machine is W7 SP1 (64bit) - wonder if it is something in 10/11?

[#9]

No, I've just downloaded firefox on macOS Monterey and it's failing.

Scrap that, maybe I typed my password incorrectly.

Working on macOS.

[#10]

This is getting very strange. 😕

EDIT: So, it may be W10/11?

[#11]

Testing past and future versions: -

104.0.2 - OK
105.0.0 - Fails
105.0.1 - Fails
106.0b7 - OK

I'm none-the-wiser as to what is actually happening but that ^ suggests we could be looking at an issue in the Firefox domain.

[#12]

Maybe, @bobpullen , but why do I (admittedly not a PN subscriber any more) have no problems on:- a 64bit laptop running W7 SP1, a 64bit laptop running a Ubuntu derivative (Zorin) and 2 x Apple devices?

[#13]

As I mentioned earlier, all iOS / iPadOS browsers have to use webkit and can't have their own engine.
It does, however, seem a Firefox / Windows 1X issue.

[#14]

OK, @dvorak  - I understand and appreciate that, so we take the Apple devices out (I rarely use the iPad browser, and even more rarely the iPhone one, anyway). Still leaves the W7 (105.0.1) and Zorin (105.0) machines having no issue.

[#15]

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@jab1 wrote:

Maybe, @bobpullen , but why do I (admittedly not a PN subscriber any more) have no problems on:- a 64bit laptop running W7 SP1, a 64bit laptop running a Ubuntu derivative (Zorin) and 2 x Apple devices?

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I don't know. Maybe Mozilla does? 😜

I'd see if I could narrow the behaviour down to something that was fixed in 106, but I'm not that short of things to do

The ticket remains open at our side, but with 106 scheduled to launch in a couple of weeks' time, I'm not that confident we'll get round to a fix before then (assuming it's something we can influence in the first place).