Firefox 91.x - enterprise_only policies are not applied ("Policy ${policyName} is only allowed on ESR.

Solution In Progress - Updated -


  • Why SearchEngines Settings in policies.json are not applied in Firefox 91.5.0 esr?
  • How to remove search providers (like Bing, Amazon)?
  • How to define own providers (company internal) via policies.json?
  • Firefox 91.5.0 esr shows the below error message:
"Policy SearchEngines is only allowed on ESR" on the about:policies page in firefox esr.


  • Red Hat Enterprise Linux
    • 8
  • firefox-91.5.0-1.el8_5.x86_64

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