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I just got a new MacBook Pro (Retina, 13-inch, Early 2015) with 10.12 installed and am installing various applications on the machine to get it ready for work. After downloading the pgadmin3-1.22.1.dmg from https://www.postgresql.org/ftp/pgadmin3/release/v1.22.1/osx/, I am unable to open the program.

So far, I have tried the following:

  • I found a description of the Gatekeeper updates made to version 10.12 at https://9to5mac.com/2016/06/15/macos-sierra-gatekeeper-changes/ and then attempted to right-click and select 'open' in order to get pgadminIII to open. This unfortunately didn't work. A popup is displayed with the following:

    "pgadmin3" can't be opnened because it is from an unidentified developer."
    
  • Using the open command from terminal. Same problem -- popup displays the following:

    "pgadmin3" can't be opnened because it is from an unidentified developer."
    
  • Using sudo open from terminal. Error is returned within the terminal and is a bit more verbose:

    LSOpenURLsWithROle() failed with error -10810 for the file /Volumes/pgAdmin3/pgAdmin3.app
    

Google and SE have been fruitless so far. Grateful for any ideas...

Cheers, James

  • This differs from apple.stackexchange.com/questions/243687/… as the right click solution does not work. – forgetfuljames Sep 27 '16 at 18:12
  • After looking a bit more asking around, I was pointed at one of the non-accepted answers in the question referenced in my comment above. The solution, which is to change the file attributes (specifically the com.apple.quarantine attribute) ended up solving the problem permanently and can be used to avoid having to always "right-click and open." – forgetfuljames Sep 28 '16 at 8:20

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