Your security preferences allow installation of only apps from the Mac App Store and identified developers.

1. Hold down "control" button

2. Click on the app that is triggering the message about the security preferences

3. Select "open" to override and install/open the application

This allows you to avoid changing the security setting to "anywhere."

I face this issue there is no button of anywhere my Mac OS is Sierra 10.12.6 plz help me why is not this button I am worried about this I never install any app who downloaded from any other web not from app store

the option anywhere was not available. the option control key seemed to work, but, in the end it did not install the application. which is a signed version of reason directly from cd. or dvd.

what to do when I have 32 bit app version on a 64bit system Mac Sierra. please help.

Hello Guys,

I faced the same issue. Apple has now changed the default settings to only download application from Mac App Store and identified developers. you need to change the settings

Please follow the steps given below to resolve this issue -

System Preferences > Security & Privacy > General > Allow applications downloaded from > Anywhere

Hope this helps

I faced this issue when installing a software that included another software inside, therefore i could not press control as the second software installer was opening automatically. The more painful issue is that from now on You cannot choose "anywhere" option under "security and privacy" pane - now there are only two options: "App store" and "App store and trusted developers". To override this issue, when the dialog box appears saying it is not a trusted developer, go to the settings -> security and privacy and you will see there is a message saying that an application wants to be installed, press open anyway and the installation will start up

@ Z3r0C0o1 - Your suggestion seems to work fine, but only problem I encounter with this is that after the file opens with the application (such as outlook 2016). If I try to open another save file (.eml), I would have to do this for each of my saved email I on the machine. I think this needs to be address at apple level in their next update.

Hi Phuong Thao,

It looks like that option is no longer available. I'd suggest posting a new query in this forum:

macOS Sierra

Cheers

I downloaded MPlayerX from the Mac AppStore but it still doesn't allow it to run. I have to change the settings to "Anywhere". This is annoying. After restarting my computer, it will revert to Quicktime as the default player even though I have set MPlayerX as the default prior to shutting down my computer. Before the upgrade to Mountain Lion, I had no such issue. This shows that Apple could not even trust the apps they approved in the Mac AppStore.

I hope Apple will fix this issue as it makes me nervous when the security setting is set to "Anywhere"

Worked like a charm... Thanks 🙂

I may have more than one problem. Every time I open System Preferences and choose Security & Privacy, then System Preferences becomes non-responsive (hangs up) (spinning wheel) and then I have to Force Quit it.

Therefore I cannot choose the fixes you recommend.

thank you tht really helps.🙂

Thanks!

This was so helpful. Thank you!

Thanks, that did it...

Thank you!! It worked! 🙂