Netflix ERROR M7121-1331

[jiameng15]

Thanks for releases electron 17.0.1+wvcus.
When I use this releases to solve the problem of origin Electron without Widevine CDM component,it works.
But there a new problem , Netflix show me the new error , error code is M7121-1331.
How can i solve this problem, or can't be solved, look forward to your reply and thank you.

Demo address: DEMO

[khwaaj]

While I'm not privy to the meaning of the error codes used by Netflix I'm pretty sure this has to do with the Widevine VMP requirement. Did you read the How does it work section of the README?

The published releases are only VMP pre-signed for development and will not work with commercial services, like Netflix. To instead generate a production VMP signature you can register for our VMP signing service, EVS, which allows you to generate a production VMP signature for your application. The linked Wiki page above documents how to register and use EVS.

[coreybruce]

@jiameng15 If you want a working Netflix desktop app for app platforms, I have made one which now supports Windows

https://gitlab.com/netflix-desktop/binaries/1.0.5-1

[V0l-D]

While I'm not privy to the meaning of the error codes used by Netflix I'm pretty sure this has to do with the Widevine VMP requirement. Did you read the How does it work section of the README?

The published releases are only VMP pre-signed for development and will not work with commercial services, like Netflix. To instead generate a production VMP signature you can register for our VMP signing service, EVS, which allows you to generate a production VMP signature for your application. The linked Wiki page above documents how to register and use EVS.

Will we ever see commercial support for it? or new versions for the wvvmp version.

[khwaaj]

Will we ever see commercial support for it? or new versions for the wvvmp version.

Not sure I follow, both the old wvvmp and the new wvcus versions of ECS support commercial services as long as you VMP sign yourself, i.e. using our free EVS service. EVS generates production signatures, which will make your app work with commercial services, it is just the published releases that are pre-signed for development only (and always have been).

[V0l-D]

How am I still getting the M7701-1003 error code then when I sign it using EVS, I've signed before on wvmp versions which works fine but it somehow does not work when I do it on wvcus could you explain why it still fails?

[khwaaj]

Well, I don't know what version you are using, what platform you are on, or exactly how you are signing, so it is a bit hard to help out.

I just confirmed however that v22.0.0-beta.3+wvcus on macOS gives the original M7121-1331 error on Netflix when using a development signature (or no signature at all). After I sign with EVS playback works fine, without any errors. There are multiple things that can break your signature, or make you sign the wrong ECS instance (e.g. when using something like electron-builder vs just running npm run start), so make sure you are following the available instructions (and search the issue archives, many things have been discussed there over the years).

I'm not exactly sure what the Netflix error M7701-1003 means, but it seems related to the CDM not being available/loaded. Two potential things that come to mind are:

• Are you using components.whenReady() before opening your Netflix window?
• If you are on macOS, and are code-singing your application, are you notarizing it properly?

[V0l-D]

Okay figured out the issue components.whenReady() was not properly configured, thanks for the help I appreciate it a lot!