With the update of Chrome v58, a lot of our internal sites are now appearing as insecure due to the local certs and self signed certs we're using. I put the workaround in for our Windows machines using GPO and enabling the key EnableCommonNameFallbackForLocalAnchors in the registry.

I cannot, for the life of me, figure out how to enable a local policy for Chrome on a Mac. I found the file that I believe I need to edit called /Applications/Google Chrome.app/Contents/Resources/com.google.Chrome.manifest/Contents/Resources/com.google.chrome.manifest. In that file I found the policy I just can't figure out how to turn it on.

Once I figure it out I can push out the change to my company with our Mac management software (Jamf)

Can anyone help?


Just type this into a Terminal

defaults write com.google.Chrome EnableCommonNameFallbackForLocalAnchors -bool true
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    Thank you so much. I've tried editing so many random files and couldn't find the magic incantation here. Super helpful! – Cody A. Ray May 18 '17 at 14:25
  • What's the -bool true for – Pacerier Sep 10 '17 at 0:11
  • it means set the value to true. not String type "true" but boolean type true – Kerem Baydoğan Sep 10 '17 at 15:35
  • I had to restart Chrome to make this take effect defaults write com.google.Chrome HSTSPolicyBypassList -string "localhost" – ow3n Feb 6 at 14:39

I think we figured it out.

We needed to create a file called "com.google.Chrome.plist" in /Library/Managed Preferences

That file contains:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple/DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">

This worked and we pushed it out using Jamf. That said, if someone has a better way to do this please let me know.

Hope this helps someone.

  • 1
    Are you sure it's Managed Preferences and not Preferences? – Pacerier Sep 10 '17 at 0:12

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