Active discussions

Please or to access all these features

Talk
Site stuff

Join our Innovation Panel to try new features early and help make Mumsnet better.

See all MNHQ comments on this thread

Original poster

HELP 404 error message when trying to open threads

237 replies

limetrees32 · 04/05/2026 12:30

On Android phone ,not using app ,viewing a thread about help dress teenage daughter for wedding clicked on link provided by OP to White Fox clothing co. When tried to go back to MN nothing but error message .
Sending this from Chromebook .

OP posts:
Thread gallery
12
Pancakeflipper · 08/05/2026 19:42

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

And me.... but it is curing my scrolling on Mumsnet time wasting habit.cos' I cant be arsed logging in this incognito way.

GardenersDelight · 08/05/2026 19:15

I only solved it by uninstalling and then downloading again. Only problem seems to be mobile app rather than tablet one so can't skip to next post by OP in each thre0a9d

VividDeer · 08/05/2026 18:46

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

It might work on chrome if the problem was with edge

Wipeywipey · 08/05/2026 17:56

Same as others, can't access on chromebook despite clearing cache. It has been great at stopping my distractions though and is added to META not believing my FB and Insta were hacked, so no social media at all if MN keeps this up!

FuzzyPuffling · 08/05/2026 17:16

I'm the same...404 message, had it for two days now.

I'm on android, not in the app, and can only get here after a kindly MNetter told me to go incognito.

Everything else on my phone is working perfectly well.

MassiveOvaryaction · 08/05/2026 13:40

Updating Chrome and turning the phone on and off again along with day 5 (6?) of clearing cookies and cache has made bog all difference.

patioh · 08/05/2026 08:21

Cleared my cache, closed all my tabs, closed Chrome, restarted phone... Still happening. I've attached screenshots - am I doing something wrong?

HELP 404 error message when trying to open threads
HELP 404 error message when trying to open threads
HELP 404 error message when trying to open threads
WeMeetInFairIthilien · 08/05/2026 06:49

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

Same here

Lunde · 07/05/2026 21:01

Still having this problem - Chrome/laptop

this time the 404 Bad Gateway message said that the MN site was using abnormally large cookies that couldn't be processed

Potooooooooes · 07/05/2026 20:49

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

Same.

Sigh.

Thingamebobwotsit · 07/05/2026 20:44

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

Same, Google Chrome

nocoolnamesleft · 07/05/2026 19:16

Cleared the cache as instructed on the other thread but still getting 400 bad request in my laptop (Microsoft edge)

Enko · 07/05/2026 15:00

BeckyAMumsnet · 07/05/2026 12:34

Hello @IDontHateRainbows can we ask you to clear the cache and not just cookies and history, please? The link in my previous post has instructions. If it's still happening after that, let us know.

@Enko Incognito/private browsing can sometimes trigger this because the browser doesn’t keep the same saved device information or cookies.
The easiest thing to do for now is try logging in in a normal browser tab rather than incognito/private mode. If you’re already doing that and still seeing the message, it may help to (yes we are saying this a lot - sorry 😬) clear your cache and try again), and switch between wifi and phone data.

Tnx Bexky but I went to incognito because the usual browsers doesnt work.. following advice in here and have cleared caches nothing works I cant get in in browser or in incognito so am forced to use the app. I am not an MN app fan

dementedpixie · 07/05/2026 13:43

I had tried clearing just mumsnet but that didnt work. Had to clear all the data for samsung Internet and that seems to have worked. Thanks @BeckyAMumsnet

purpleme12 · 07/05/2026 13:37

Also on day 4 too.....

MNHQ
BeckyAMumsnet · 07/05/2026 12:46

Hello, @dementedpixie If you’re using Samsung Internet, you can clear the cache by doing this:

  • Open Samsung Internet
  • Tap the three lines/menu button
  • Go to Settings
  • Tap Browsing data
  • Tap Delete browsing data
  • Select Cached images and files (you don’t necessarily need to select passwords/autofill etc)
  • Tap Delete data

You can also clear data for just Mumsnet:

  • Go to Settings
  • Sites and downloads
  • Manage website data
  • Search for Mumsnet
  • Delete the stored data for the site

Then close and reopen the browser and try again. Let us know how you get on. Thankyou.

VividDeer · 07/05/2026 12:41

Mine suddenly started too. Worked in incognito but had to keep logging back in.
Worked on Microsoft edge

Have now cleared cache for just the last 7 days and working... for now

This has to be a mumsnet problem surely

dementedpixie · 07/05/2026 12:39

@BeckyAMumsnet how do you do it on Samsung Internet?

MNHQ
BeckyAMumsnet · 07/05/2026 12:34

Hello @IDontHateRainbows can we ask you to clear the cache and not just cookies and history, please? The link in my previous post has instructions. If it's still happening after that, let us know.

@Enko Incognito/private browsing can sometimes trigger this because the browser doesn’t keep the same saved device information or cookies.
The easiest thing to do for now is try logging in in a normal browser tab rather than incognito/private mode. If you’re already doing that and still seeing the message, it may help to (yes we are saying this a lot - sorry 😬) clear your cache and try again), and switch between wifi and phone data.

MNHQ
BeckyAMumsnet · 07/05/2026 10:29

Thanks so much to everyone who’s been testing this and letting us know what you’re seeing - it’s really helpful, and we know how annoying these sorts of stop-start issues are.

For some users, clearing the browser cache has fixed the problem, but we can see that isn’t the case for everyone. One thing that’s helping us narrow this down is that Mumsnet does seem to work properly in an incognito/private browsing window. That’s useful because incognito mode doesn’t use the same stored cache as your normal browser session, which points to this potentially being caused by something locally stored in the browser rather than a wider site issue.

If you’ve already fully cleared your cache and you’re still seeing the problem, we’d really like to dig into it with you directly. If you’d be happy to jump on a quick call/screenshare with the team so we can see exactly what’s happening, please either report this post or email us directly at [email protected].

And if you need instructions for clearing your cache (you can do this just for Mumsnet rather than wiping everything), please take a look here:
https://www.mumsnet.com/talk/site_stuff/5522378-update-on-recent-404-errors-and-how-to-clear-your-cache?

Thanks again for bearing with us while we work through it.

Update on recent 404 errors and how to clear your cache | Mumsnet

Hello everyone. We’ve now identified what caused the 404 errors some users were seeing late last week and over the weekend. There was a very brief...

https://www.mumsnet.com/talk/site_stuff/5522378-update-on-recent-404-errors-and-how-to-clear-your-cache

IDontHateRainbows · 07/05/2026 10:18

Yes, poor show Mumsnet this is still happening and advice to clear browing history is having no effect.

Enko · 07/05/2026 09:08

I cant get my android to log in on incognito it keeps saying I am logging in from a unfamilar device ConfusedConfused

I dislike the app so much and this is really making me use mumsnet less as I cant get on with the app. It feels like a conspiracy to force us onto the app.

I am on day 4 of this happening

ElectoralControversy · 06/05/2026 23:04

I was getting the 400 bad request and could only get on through incognito, chrome browser, android phone

I cleared "cookies and site data" but not cache (because I didn't think of checking on here!) and that has fixed it... for now

Pancakeflipper · 06/05/2026 22:35

Hurrah- I have found my people. Thought it was my phone..
Been deleting cookies, turning on and off etc... so gone incognito which feels shifty.

Hoping this sorted SOON

Potooooooooes · 06/05/2026 22:02

Raising my hand to say my laptop is affected now. Have tried clearing the cache, closing the browser, throwing salt over my left shoulder, recharging my crystal by moonlight, nope nada.

Luckily for me you poor things, so sorry the mobile site still works on my phone.

Please sort it ahhht, HQ [Peggy Mitchell pointy finger]