Cypress does not detect Firefox 64-bit browser

[smit9234]

Desired behavior:

On Windows 10 using Cypress v4.0.0, the Test Runner doesn't now show Firefox as an option in the browser list.

Looking at the browser configuration, Firefox is not listed.

I copied the Firefox directory (C:\Program Files\Mozilla Firefox) to the AppData directory
..\AppData\Roaming\Cypress\cy\production\browsers

This doesn't update the browser list.

Versions

4.0.0

[smit9234]

I just installed the 32 bit version (https://www.mozilla.org/en-US/firefox/all/#product-desktop-release).

I would suggest that Cypress be updated to also look at the C:/Program Files directory for 64 bit browser versions.

[flotwig]

Thanks for reporting this, you're right, currently only the 32-bit Program Files are considered.

[jennifer-shehane]

In the meantime, please follow the instructions for launching the Firefox browser by path

• https://on.cypress.io/launching-browsers#Launching-by-a-path
• https://on.cypress.io/debugging#Launching-browsers

[jdvegmond]

Is the title correct? For me it doesn't detect the 64-bit version, but it does detect the 32-bit version.
Even when I specify the path to the 64-bit version, Cypress can't handle it. When I use
npx cypress open --browser C:\Progra~1\Mozill~1\firefox.exe I get the following message:

Can't start server
We could not identify a known browser at the path you provided: C:\Progra1\Mozill1\firefox.exe
The output from the command we ran was:
Version=72.0.2.7321

(Cypress 4.0.0, Windows 10, latest Firefox 64-bit version)

[amrsa1]

@jennifer-shehane

im experiencing same issue

[rzegnam]

Is the title correct? For me it doesn't detect the 64-bit version, but it does detect the 32-bit version.
Even when I specify the path to the 64-bit version, Cypress can't handle it. When I use
npx cypress open --browser C:\Progra~1\Mozill~1\firefox.exe I get the following message:

Can't start server
We could not identify a known browser at the path you provided: C:\Progra1\Mozill1\firefox.exe
The output from the command we ran was:
Version=72.0.2.7321

(Cypress 4.0.0, Windows 10, latest Firefox 64-bit version)

It doesn't detect 64-bit version using --browser firefox and when providing the path to the firefox.exe does not help.
Installing 32-bit helped.

[cypress-bot]

The code for this is done in cypress-io/cypress#6367, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 4.0.1.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v4.0.1, please open a new issue.