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I did the __disable-web-security in Terminal on Mac. Do I need to enable it again? Or does it enable by itself after restart?

If I need to enable it again, how do I do that? I searched everywhere, but didn't find.

jl001
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  • this link may help you https://stackoverflow.com/questions/17679399/does-disable-web-security-work-in-chrome-anymore/36939693 – abdulhusain Jan 28 '19 at 20:09
  • Thanks, but as far as I see that just says how to disable. I need to enable web security again, cos it is already disabled. – jl001 Jan 28 '19 at 20:28

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Go to chrome://version and look at the Command Line. If the command line argument is still there, you should restart chrome and then launch it normally (without the flag).

A bit more context: "Flag" refers to two slightly different concepts in Chrome:

  1. Any command line argument that starts with a -- (as opposed to an argument that names a URL or a file, for example).
  2. The list of toggles available at chrome://flags.

Any arguments added manually to the command line will only persist until you quit Chrome. On the other hand, the toggles set at chrome://flags will persist until they are reset. (To further blur this, invoking chrome://restart will preserve the command line flags.)

This particular flag makes its presence fairly obvious, with a banner:

You are using an unsupported command-line flag: --disable-web-security. Stability and security will suffer.

So it should hopefully be clear whether the flag is present (and also why this is the sort of flag that can't be persisted at chrome://flags).

The flags set in #2 are delimited in Chrome's command line by the --flags-switches-begin…--flags-switches-end section. Arguments outside of that section are coming from somewhere other than chrome://flags (namely, from the command line, except in the case of Chrome OS and Android, which have their own startup procedures).

Josh Lee
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  • Thank you so much for pointing me into that direction. There is no command line argument there. But I use a 2016 version of Chrome 49.0.2623.112. Did that command line argument appear on that old version too? – jl001 Jan 28 '19 at 20:47
  • Even if you use a flag that chrome does not recognize, it will show up there, you can try it with `--random-made-up-flag`. So if the flag is not there, it's not there. – Josh Lee Jan 28 '19 at 20:49
  • Oh it's called flag? In the chrome://version, it says both --flag-switches-begin --flag-switches-end. So is it off or on then? – jl001 Jan 28 '19 at 20:54
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    @jl001 Added some more context. – Josh Lee Jan 28 '19 at 21:25
  • Great! Thanks you so much for your help!! – jl001 Jan 28 '19 at 21:34