Install macOS Sierra is trying to add a new helper tool

When trying to install macOS Sierra I get a popup asking for my password which says "Install macOS Sierra is trying to add a new helper tool". I've never had this with previous updates and searching these discussions and more generally on Google draws a blank. Is it safe to put my admin password in and proceed with the install?

MacBook Pro, OS X El Capitan (10.11.6)

Posted on Sep 21, 2016 7:52 AM

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13 replies

Oct 15, 2016 2:03 AM in response to Zyriab

Just to add, I took the file from the privileged key folder on my iMac in Library. Copied onto MacBook (it was not there) and tried to launch again. Still failed. Its all the exact same software etc. I did restart etc etc. After the prompt for my Admin password it still never installed and then the helper file i just put in there had disappeared.


So the helper file was installed on iMac and not MacBook with exact same software installation file. Both devices running exact same as in latest mac OS Sierra. Makes no sense to me so if anyone can help.

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Install macOS Sierra is trying to add a new helper tool

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