Applications folder permission can not set, says "The operation can’t be completed because you don’t have the necessary permission"

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Applications folder permission can not set, says "The operation can’t be completed because you don’t have the necessary permission"

Hello, I recently completely reinstalled OS X el capitan, and now I am trying to make my folder permissions only read/write for my own admin user. But when I try to change permission of Applications folders everyone section to No access, a pop up menu says "The operation can’t be completed because you don’t have the necessary permission". What should I do ? Does this mean I am not granted to all access of my computer , or maybe someone else controls them ?
Need help, thank you.😕

MacBook Pro (Retina, 13-inch,Early 2015), OS X El Capitan (10.11)

Posted on Oct 4, 2015 12:36 PM

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Answer 1

Top-ranking reply

Niel

Level 10

731,999 points

Oct 4, 2015 1:02 PM in response to Batuhayabusa

1. Leave it as is.

2. This is due to System Integrity Protection.

(134406)

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Answer 2

Batuhayabusa Author

Level 1

5 points

Oct 4, 2015 1:05 PM in response to Batuhayabusa

Ok thank you for the fast reply, also I would like to ask, how can I understand if anybody is remotely messing with my computer, and maybe changing my admin priviliges and getting into my folders, messages or else ?

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Answer 3

rccharles

Level 6

12,969 points

Oct 4, 2015 1:08 PM in response to Batuhayabusa

But when I try to change permission of Applications folders everyone section to No access, a pop up menu says "The operation can’t be completed because you don’t have the necessary permission".

Why do you want to change the permissions on your Applications folder?

Frankly, if you do not know how to change the permissions, you probably do not want to change the permissions.

You will be reducing the security on your systems by messing with this.

I wouldn't be change permissions on the application folder. Do you know that applications are hidden folders?

R

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Answer 4

Batuhayabusa Author

Level 1

5 points

Oct 4, 2015 1:09 PM in response to rccharles

Actually, I am worried about someone is remotely messing with my computer by the internet and maybe getting in my folders or something, and since I am not a computer engineer I am getting nervous about my privacy. If you can help it will be appreciated, thanks.

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Answer 5

Oct 4, 2015 1:15 PM in response to Batuhayabusa

The System Integrity Protection is designed to block changes to System owned locations including /Applications. This is new with El Capitan, and just as it is blocking you, it will block those with bogus access to your Mac. Even root privileges cannot override the SIP protections.

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Answer 6

Niel

Level 10

731,999 points

Oct 4, 2015 1:16 PM in response to Batuhayabusa

You're better off enabling the firewall on your computer or router and checking that unneeded services are turned off in the Sharing pane of System Preferences.

(134408)

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Answer 7

Batuhayabusa Author

Level 1

5 points

Oct 4, 2015 1:28 PM in response to Batuhayabusa

Okay guys thank you so much. 🙂

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Answer 8

BobHarris

Level 9

55,049 points

Oct 5, 2015 6:54 AM in response to Batuhayabusa

Make sure you do not have any remote access services enabled. System Preferences -> Sharing

Change all your passwords on your Mac.

Make sure you do not have a 3rd party access app installed _AND_ running, such as TeamViewer.com (while TeamViewer.com is a very good application, and is very useful for helping friends and relatives remotely, it has also been used by scamers to trick people into letting them have access to their systems). And TeamViewer.com is not the only such utility, so you should be checking for others.

If you think you have been compromised, you should backup your data (twice is always a good idea), do a clean install, do clean installs of all your applications you have besides the OS X installed one, then move your data (not your apps) back from the backups you made.

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Answer 9

rccharles

Level 6

12,969 points

Oct 5, 2015 6:54 AM in response to Batuhayabusa

I recommend that you get a littlesnitch. littlesnitch will track your Web traffic and tell you which applications are sending data from your computer. Be sure to run it awhile because it will trigger a number of alerts. In trail mode, it will run for three hours per boot for a about a month.

http://www.obdev.at/products/littlesnitch/index.html

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