Cosmos browser opens and closes

[deepblue812]

Opening the Cosmos browser today in Max and it opens the main window, then immediately closes, then immediately reopens again over and over. It looks like it's logging me in and then back out, but opens and closes so fast you can't click anything.
Was working fine as recently as yesterday so not sure what the problem is.

SJ

[vladimir_krastev]

Hi, thanks for posting. Could you please open a ticket using this support contact form. Please include a link to this thread in your e-mail so we can track you issue.

[visionsbox]

Hi!
We have the same problem here - Cosmos Browser Version 2023.10.9 - the browser reloads every ~5s. I can't click anything. I already reinstalled it, removed databases but nothing helped.

We already had the problem in July 2023 but it was gone after an update.

Windows 10, 3dsMax 2024.1 (26.1.0.2270), V-Ray 6.10.08.
This is a video of the flickering: ccb_flicker.mp4

Hope you can help..

[vladimir_krastev]

Hi, I tested the same Cosmos Browser and 3ds Max versions and everything works as expected.
From your video it is evident that you are not signed in. This is how your Cosmos Browser should look if you are signed in


Logging in might not solve the issue but it is worth trying. For further assistance please open a ticket and choose "Technical Assistance Starting the Product" for request type.

[ivan.stefanov]

Hello visionsbox

Could you please try the following solutions and to share the result with us:

Solution 1:
1. Set the Cosmos Browser in offline mode, by editing the config.json file located here - C:\Program Files\Common Files\ChaosGroup\ChaosCosmos
2. Restart Cosmos Browser by Stop / Start shortcuts in start menu;
3. Reload Cosmos UI from 3ds Max (or even better restart 3ds Max);

Solution 2:
1. Stop 3ds Max;
2. Delete (or temporary move or rename) the following directory C:\Users\{User}\AppData\Local\Autodesk\3dsMax\2024 - 64bit\ENU\en-US\QtWebEngine
3. Start 3ds Max and test Cosmos Browser;

[deepblue812]

Had this issue pop up again today with Max 2025. Neither of the above solutions fix the problem (Cosmos browser just opens and closes continuously).
Also have Max 2024 still installed, and the Cosmos browser works fine.

[hristo_chakarov]

Hi there,

Most probably you did notice, but just to be sure. In the Solution 2 above the path is to 3ds Max 2024, you wrote that you're on 2025. You need to replace 2024 with 2025 in the path above:

C:\Users\{User}\AppData\Local\Autodesk\3dsMax\2025 - 64bit\ENU\en-US\QtWebEngine

Also, by "just opens and closes continuously" do you mean that Cosmos UI constantly reloads, or literally the app window opens and closes?

[deepblue812]

Yes, made sure I was working in the 2025 directory. By opens and closes I mean the UI itself reloads once per second in the application window (recorded here):

https://drive.google.com/file/d/1t33...ew?usp=sharing