No Connect When Opening Firefox Browser With Cypress. Firefox browser window is all white.

[thepixelhead]

The Firefox Browser keeps beeing completely white when opening with Cypress. Until yesterday all worked fine, since today I have this problem.

I started Cypress in the Visual Studio Code Terminal with

npx cypress open

The Cypress Launchpad window opens. I choosed the browser Firefox. I pressed the button "Openening E2E Testing in Firefox".

Then the Firefox browser opens ... but stays completely white.

In the Terminal is this info:

Still waiting to connect to Firefox, retrying in 1 second (attempt 42/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 43/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 44/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 45/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 46/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 47/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 48/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 49/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 50/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 51/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 52/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 53/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 54/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 55/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 56/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 57/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 58/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 59/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 60/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 61/62) Still waiting to connect to Firefox, retrying in 1 second (attempt 62/62)

Expected behaviour is the Firefox browser shows a list of E2E specs, the list of all Cypress test cases.

Additional info on the browser handling:
I opened the Firefox browser before using Cypress for other things. All fine. When starting Cypress first time today I remeber Firefox was suddenly updating automatically. When finally open all was white. All other attempts opening Firefox with Cypress in the following had all the same result:

Still waiting to connect to Firefox, retrying in 1 second (attempt 62/62)

The Firefox Browser keeps beeing completely white when openning with Cypress. Until yesterday all worked fine, since today I have this problem.

Versions:

• Cypress v12.14.0
• Windows 10 Enterprise
• Firefox 129.0 (64-Bit)

Is there anyone else with the same issue? Is there a known solution to this?