Could you please check the browser developer console if there is a problem load a file for example?

Hi, The developer console does not report any issues. However after submitting this post I uninstalled Akeeba admin tools and Akeeba backup. The uninstall did not go very well with various issues. I am now getting this message: (An error has occurred. 0 Class 'FOF30\Container\Container' not found). But interestingly have not been logged out either. So suspect this is disappointingly an Akeeba issue. I am going to rebuild without using Akeeba. On another note does anyone know if it is ok at this point to built a site using Joomla 4 Beta 4. As a production version without going live until the final release of Joomla 4. Basically would I be able to upgrade from a Beta to a production version of Joomla 4 down the line.

@nikosdion do you have any idea if this is related to your components?

I haven't had that problem and I'm in the middle of developing a Joomla 4 template for our site, on a copy of the site with ALL of my software installed (including things the OP didn't include). So on first blush I am inclined to say it's probably unrelated or at least I haven't observed it with the settings I use on my local J4 sites, including the upgraded copy of our live site.

One quick test for the OP is disabling Admin Tools system plugin and watch if this issue happens again within a few hours of using the site continuously. Nothing else I have published could be related.

I think I have fixed the error message and it looks like that was due to me switching off part of Akeeba. I am currently rebuilding the site without Akeeba and if there are no issues it would be safe to assume that it related to admin tools or Akeeba backup.

OK I now have a clean install of just Joomla 4 Beta 4 no third-party plugin's no custom templates and tested on Safari and chrome and it keeps logging me out after several clicks in less that 5 minutes. Any thoughts?
Cleared browser cache,
all settings are at default
Site is built using a sub domain
Going to investigate Cloudflare, but running out of ideas...

The attached image has been seen a few times, once this shows in the console the next click forces me out of the site. Maybe this will help find the issue I am having? Any thoughts?

The image above is causing the problem. If I login to the control panel as per the image above and refresh the page several times, after about 4 / 7 page refreshes the error code is loaded into the developers console and the privacy request icon goes from green to red. The following refresh logs me out. Is this a bug or a server issue, I have many other sites pre Joomla 4 on the server and no issues.

Similar issue repeating the same steps. Every time I refresh the page the system checks for Joomla updates, this time the attached image triggered the console error, the next refresh logged me out.

Your screenshot is a symptom, not a cause. When Joomla Update tries to fetch the core update status you are already logged out and you get an HTML page (login) which causes the JSON parsing error.

You said the problem occurs even when you haven't installed Akeeba software so the root cause is not my software, as I suspected.

What are the pages you visit BEFORE you get logged out? My suspicion is that the session storage gets either full or erased, causing the problem.

You also said you're using CloudFlare. First of all, J4 is not production ready. Using it on a live site is... brave :) Second, can you try WITHOUT CloudFlare? Some of its features such as RocketLoader and some caching rules may cause that kind of a problem with admin pages. If that was the problem add a page rule to disable caching and security controls for all administrator URLs. This should work. Once you confirm it you can start optimizing the security settings if you want. That's basically what I had to do on our live Joomla 3 site.

Hi Nicholas,
The errors above are replicated by logging into the website backend and refreshing the page 4/6 times, the console will then catch the error and then the next refresh will log you out. The same error happens when browsing other pages. refreshing the same page just proves that this error is not related to something I was actively doing. Or that the problem was related to Akeeba.
I am not using it on a production site but I am wanting to know if it would be safe to say I can upgrade from J4 Beta to a production version when it becomes available. I don't want to start creating pages of content if I cannot upgrade later?

CloudFlare is installed and caching the site. So this is my next avenue to investigate. Just surprised that no one else is having this issue. Other than Cloudflare this is an out of the box setup.

Hi, just throwing in an idea:
Could it be that Your Browser got updated and now have a problem with the SameSite cookie attribute?
I experienced that recently with the different Browser Google Chrome 85.xx version on serveral sites, that I got kicked out, nonetheless that i should stayed logged-in ..

It's been happening for a few days and over multiple browsers.

i suggest you to read this https://support.cloudflare.com/hc/en-us/articles/201997250-Cloudflare-and-Joomla-Recommended-First-Steps
as this is not a joomla issue i'm closing this

I am not using it on a production site but I am wanting to know if it would be safe to say I can upgrade from J4 Beta to a production version when it becomes available. I don't want to start creating pages of content if I cannot upgrade later?

It is not safe at all imho.

@infograf768 Thanks appreciate your advise

Just to close this off. I tried various things with Cloudflare RocketLoader was not active and tried using a page rule to remove page cache. But the issue continued. I have built another clean copy of J4 using the same server and avoiding Cloudflare and it's working fine.