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Editorial Team
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Asked: 2026-06-02T03:33:04+00:00

I can’t chmod group permission in Cygwin on Windows 8 so that I can’t

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I can’t chmod group permission in Cygwin on Windows 8 so that I can’t ssh connect to a server using an ssh key.

Bash prompt warning: “Permissions 0660 for ‘/home/KeepZero/.ssh/id_rsa’ are too open.
It is required that your private key files are NOT accessible by others.”

KeepZero@t400win8 ~
$ ls
test

KeepZero@t400win8 ~
$ ls -l
total 0
-rwxrwx--- 1 KeepZero KeepZero 0 Mar  4 15:07 test

KeepZero@t400win8 ~
$ chmod 700 test

KeepZero@t400win8 ~
$ ls -l test
-rwxrwx--- 1 KeepZero KeepZero 0 Mar  4 15:07 test

KeepZero@t400win8 ~
$ chmod 777 test

KeepZero@t400win8 ~
$ ls -l test
-rwxrwxrwx 1 KeepZero KeepZero 0 Mar  4 15:07 test
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1 Answer

  1. Editorial Team

    Do an ls -al and you will see that your files do not belong to any group (none).

    Just do a chgrp Users * on your files, and you are fine again.

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