I am trying to enabled the Chrome policy EnableLSha1ForLocalAnchors on my Mac running Sierra and unfortunately have not had much luck! So far I have tried the following:

  1. Opened the com.Google.Chrome.manifest file
  2. Changed the code below to set the values to 1 and saved the file
  3. Restarted Chrome and confirmed that the setting is not shown as enabled when viewing chrome://policy/

What am I doing wrong? This seems very complicated compared to how it is handled through the Windows registry.

Thank you


1 Answer 1


Open a terminal, and run the following, then restart Chrome.

defaults write com.google.Chrome EnableSha1ForLocalAnchors -bool true
  • Welcome to Ask Different and thank you for your answer. :) Unfortunately, short answers such as this don't really provide enough detail or context to help many users. If possible, it'd be good if you could add some more info on what this terminal command actually does? It's also good to provide the command that undoes the original action in case the OP wants to revert back. Also, you may want to read How to Answer for tips on providing answers here.
    – Monomeeth
    Commented Apr 22, 2017 at 1:30
  • 4
    That answer was incredible - THANK YOU! Never knew it was possible to update a manifest file that way
    – AAA
    Commented Apr 24, 2017 at 12:50
  • @dodysw running into more issues and hoping you can help :( when I entered that comment you mention, it didn't seem to quite fix the issue I was expecting it to fix. When I went to view policies (chrome:\\policy) I got a message next to the policy that states: Expected boolean value. I tried changing it to a 1 instead and same result. Am I missing something? Also how does it know where to write the manifest changes to? Thank you!!
    – AAA
    Commented Apr 28, 2017 at 21:17
  • 1
    Figured it out: defaults write com.google.Chrome EnableSha1ForLocalAnchors -bool true thank you!
    – AAA
    Commented May 1, 2017 at 12:31
  • FWIW, -string instead of -bool seems to work to set string settings. For example: defaults write com.google.Chrome SSLVersionMin -string "tls1.1"
    – Joe Murray
    Commented Aug 28, 2018 at 20:07

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