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User profile for user: robGTR
robGTR Author
User level: Level 1
45 points

System Extension Blocked - but can't allow extension

I installed macOS 10.13 High Sierra yesterday. This morning, when trying to boot up my VMWare for the first time since the install, I got the following error message:


"System Extension Blocked

A program tried to load new system extension(s) signed by "VMWare". If you want to enable these extensions, open Security & Privacy System Preferences"


The problem is that when I go to Security & Privacy, there is no option to 'Allow' the extension. I have read that this was a known bug in the beta versions of High Sierra, but surely this was fixed before release!?


I am also now getting exactly the same problem with my Symantec anti-virus. Same error message and still no option option to 'Allow' the extension.


I would be grateful to anyone that has been able to resolve this.

MacBook Pro with Retina display, macOS High Sierra (10.13)

Posted on Sep 27, 2017 1:24 AM

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User profile for user: Daniel Schlaug
Daniel Schlaug
User level: Level 1
15 points

Posted on Dec 22, 2017 8:35 AM

This was it! Clicking "Allow" over Screen Sharing doesn't work so I pulled out Script Editor and


tell application "System Events" to click at {890, 460}


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System Extension Blocked - but can't allow extension

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