1806083 - [Experiment] Users on Windows 7 are not enrolled in the "Device migration - Existing users ECO2212 EN" experiment.

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect)

Description

[Marius Coman [:mcoman], Ecosystem QA]

Attachment: rec of the issue.gif

[Notes]:

• I have observed that in the experiment’s targeting expression we have the os.windowsVersion >= 7 parameter, however, it seems that the browser targets the NT version which is 6.1 for Windows 7.
• I have evaluated the os.windowsVersion parameter in the "ASRouter" page using 6.1 instead of 7 and the result was true.

[Affected versions]:

• Firefox Release 108.0 - Build ID: 20221208122842

[Affected Platforms]:

• Windows 7 x64

[Prerequisites]:

• Have a Firefox en-* locale installed.
• Have a Firefox profile older than 28 days.
• Have the "user.js" file saved to disk.

[Steps to reproduce]:

1. Navigate to the profile folder from prerequisites and paste the "user.js" file.
2. Open the browser using the profile from the prerequisites.
3. Navigate to the "about:studies" page and observe the listed experiments.

[Expected result]:

• The "Device migration - Existing users ECO2212 EN" experiment is displayed.

[Actual result]:

• The "Device migration - Existing users ECO2212 EN" experiment is NOT displayed.

[Additional Notes]:

• Also a message from the "RSloader" saying that the "device-migration-existing-users-eco2212-en did not match due to targeting" is displayed in the "Browser Console".
• This issue is not reproducible on Windows 10 and Windows 11.
• This issue is reproducible on all Firefox Versions targeted by the experiment.
• Attached is a screen recording of the issue:

Comment 1

[Meg Viar [:mviar]]

Thanks for catching this one, Marius. I've requested an update to the advanced targeting. Here's the pull request. I'll let you know when that lands.

Comment 2

[Meg Viar [:mviar]]

Meant to just CC you, @aminomancer, not NI.

Comment 3

[Meg Viar [:mviar]]

Hi Marius, the off-train fix to this targeting landed about a half hour ago. It may take another 30+ minutes for the change to be synced in experimenter. Let me know if you're still seeing any issues after that and thanks again.

Comment 4

[Ed Lee :Mardak]

I put the experiment back into draft then back into preview, so it should have the updated targeting now.

https://firefox.settings.services.mozilla.com/v1/buckets/main/collections/nimbus-preview/records/device-migration-existing-users-eco2212-en

Comment 5

[Marius Coman [:mcoman], Ecosystem QA]

I have verified that this issue is no longer reproducible using the latest Firefox Release (108.0 Build ID - 20221208122842) installed on Windows 7 x64. I can confirm that users on Windows 7 are successfully enrolled in the "Device migration - Existing users ECO2212 EN" experiment.