Change record status: 
Project: 
Introduced in branch: 
7.x
Introduced in version: 
7.93
Description: 

The Permissions-Policy: interest-cohort=() header was removed, since it usage is no longer supported by Google. Drupal 7 added headers to block FLoC in #3209976: Add Permissions-Policy header to block Google FLoC (D7).

If you wish to preserve the header for any reason (for example to integrate with - or block - Topics API), there's a module for that. You may wish to evaluate one or more of:

If you added $conf['block_interest_cohort'] to settings.php that should be removed as it will no longer do anything.

Impacts: 
Site builders, administrators, editors
Module developers