@Clive_A 

I haven't tried with Chrome yet. Next time I'm in the location of the router I will try and also in incognito mode on Edge.
As I mentioned I could access the page in Firefox, thus it was just a minor annoyance.

So it must be a cache issue. Will see.

Thanks for your reply.

So, the thing is, still didn't try with Chrome but did an attempt to clean cache in Edge but it's not that obvious es it is in Firefox. It seems you can't clear cache for specific domain. And I can't risk deleting cache for every other page. What I could do was "hard reload" but did not solve the issue. I didn't try incognito mode either.

I'm saying that the page should run in an up-to-date Edge browser.

This was in Windows 10.

Now, I found another issue on Android, in the same browser, Edge:

In this one I can log in the page and browse, EXCEPT when I click on Quality of Service menu tab, it logs out immediately. Every single time I tried, it logged out.

@Fae 

The latest issue with the setup page. Now with Firefox (latest version on Windows 10) after choosing LAN tab, in a second it logs out.

Another:

on Firefox (Android) on the status page the value of the CPU was NaN and the graphic chart was missing.

  @Arion 

Hello,

Chrome is a privacy and security bullsh1t, don't use it...

In my case, i use Firefox 102.13 and ER605 v1.3.0 without any problems...

(But, it's true that the first time after upgrade to 1.3.0 , i has got the same message than you "unsupported browser", then it disapears few days later, ican't know why...)

  @Arion 

Hi,

I have the exact same problem in Edge (Chromium) after upgrading firmware to 2.1.2 Build 20230210 Rel.62992.

I tried in Chrome and it works.

It also works in incognito mode.

I delete the cookies for the local ip address for my ER 605 but still same problem.

Regardless of what others might think of Edge, it should work in Edge.

  @Clive_A 

I updated the ER605 from Firefox and now I get the "Unsupported Browser" error in Firefox! In Edge it works ok. I don't use Edge, I use Firefox all the time.

C'mon TP_Link, What the heck? This is (should be) an easy fix for you.

Why make us jump through hoops and change browsers for something that used to work but no longer works due to your update. Can you fix the update to work among the standard primary browsers? If so, thank you.

  @Clive_A 

The thing is, I've never had this sort of problem in the past as long as I've used a mac (old unsupported OS) with Firefox ESR version. Only recently when I used a windows laptop with up-to-date OS and browser.

So, if this is a feature and not a bug, may I suggest the developers to include a notice on the login page?

There could appear an alert in case of unsupported browser prompt, instructing the user to choose Private/InPrivate mode.

Because in private mode it works indeed. Well, sort of...

...I have still experienced sudden logouts when clicked on different menu item, e.g. LAN or QoS. It was in active situation, not after idle time.

Speaking of which, this is strange that it logged me out when I tried to enter the QoS page for the first time. So, there shouldn't have been any saved corrupted data in cache before that attempt for that subpage. Anyway, if developers don't find a solution to provide smooth and reliable login with any major web browser, they should at least put that valuable information (about private mode) on that initial page, coded in the device's firmware.

And as I've already mentioned before, asking to clear cache is not useful, especially in browsers like Edge where you can only clear the cache for all data of all websites at once, not individual ones like in Firefox you could and even in Firefox the logging-out-issue happens occasionally.