Firefox 116 will no longer run on Windows 7/8/8.1.

Since 116 nightlies will begin June 5, I've temporarily disabled Firefox nightly updates for Windows 7/8/8.1. Next week we'll update Balrog again to pin nightly for Windows 7/8/8.1 to the latest 115 nightly build.

One thing to note here - Firefox ESR 102 users on Win 7/8/8.1 should not be upgraded to 115 yet. They should come along with the normal ESR 102 to 115 migration in September.

(In reply to Geoff Brown [:gbrown] from comment #1)

Next week we'll update Balrog again to pin nightly for Windows 7/8/8.1 to the latest 115 nightly build.

This has not happened yet: no changes have been made, so Firefox nightly updates for Windows 7/8/8.1 remain disabled.

Nightly channel for Windows 7/8/8.1 is pinned to the latest 115 nightly, with the de-support message served for the latest.

Via :mconca, the desired per-channel behavior is:

• release and beta move to esr115
• devedition and nightly should be "frozen at 115"

Beta-localtest rules serve the channel-switching mar and have now been validated by QA.

In preparation for Tuesday's merge and release, Aurora/Beta channels for Windows 7/8/8.1 are temporarily pinned to Devedition-115.0b9-build1 (Aurora*) and Firefox-115.0-build1 (Beta*, except for localtest).

The temporary beta channel pin was updated to 115.0-build2.
The aurora channel rules have been updated to point users on 115.0b9 at the desupport pages.
The beta-cdntest rules were updated to serve the channel-switching mar, and have been validated by QA.

Since yesterday, the beta* channel has been serving the channel-switching mar.

As of today, the channel-switching mar is being served on the release channel at 1%.

...that was increased to 25% and carefully monitored, then bumped to 100%.