How to disable Incognito mode in Chrome? For Mac OS X, how do you disable Incognito mode in Chrome? The desired result simply being that the user cannot browse in Incognito mode, even if they know the keyboard shortcut or something similar.
The short answer: you must edit the preferences file so that the key IncognitoModeAvailability has a value of 1.

Original Instructions

In /Library/Preferences/ add a plist entry to the file com.google.Chrome.plist such that the key is IncognitoModeAvailability and the value is 1.

Here is an example: assuming the file com.google.Chrome.plist doesn't exist, use a text editor to save the following code:

&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt;
&lt;plist version="1.0"&gt;
&lt;dict&gt;
   &lt;key&gt;IncognitoModeAvailability&lt;/key&gt;
   &lt;integer&gt;1&lt;/integer&gt;
&lt;/dict&gt;
&lt;/plist&gt;


The full file name and path of the above should be /Library/Preferences/com.google.Chrome.plist.

Updated Instructions

Since macOS Sierra, proper plist files seem to be in some binary format by default&mdash;a format that you can't edit with a normal text editor. I found that I can open them in Apple's Xcode and it has a nice GUI&mdash;very easy to edit. If you don't have access to Xcode, I think you can use the plutil terminal command like this:

plutil -convert xml1 YOUR_FILE_NAME_HERE


In xml format, you should be able to edit it in a text editor, and a web site I read says that the xml format should work fine.

Regardless, I recently was able to disable Incognito mode using Xcode on the ~/Library/Preferences/com.google.Chrome.plist file. (Furthermore, I had to delete /Library/Preferences/com.google.Chrome.plist because my old version was deemed "corrupted" because it wasn't in a proper file format.)