Polkit error - GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed

I have multiple servers and I have updated 2 of them, now I have the same error on both everytime I tried to restart any service.

I get the following error:

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Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject
Error registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject (polkit-error-quark, 0)
Why we get this error? And what is the solution?

this is not any error ots some issue with new version of centos 7.8 you can disable secure processes to suppress this message.

this is not any error ots some issue with new version of centos 7.8 you can disable secure processes to suppress this message.

How can I disable secure processes?

And why this is not an error? This cause that some processes cannot restart and if they stop we are unable to start it, I think the system should not work like that.

This is CentOS bug and seems like they will not fix it
https://bugs.centos.org/view.php?id=17291

Do not "disable secure processes" fix the real reason, Solution, test on 2 updated CentOS 7 with CWP
https://access.redhat.com/solutions/1543343

Resolution:

    Ensure the existence of a polkitd system user & group
    Copy/paste the following 2 compound-commands to a root terminal to check for and conditionally create the user/group
   

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getent group polkitd >/dev/null && echo -e "\e[1;32mpolkitd group already exists\e[0m" || { groupadd -r polkitd && echo -e "\e[1;33mAdded missing polkitd group\e[0m" || echo -e "\e[1;31mAdding polkitd group FAILED\e[0m"; }
    getent passwd polkitd >/dev/null && echo -e "\e[1;32mpolkitd user already exists\e[0m" || { useradd -r -g polkitd -d / -s /sbin/nologin -c "User for polkitd" polkitd && echo -e "\e[1;33mAdded missing polkitd user\e[0m" || echo -e "\e[1;31mAdding polkitd user FAILED\e[0m"; }
    Reset the permissions and user/group ownership for all files provided by the polkit and polkit-pkla-compat packages
    Copy/paste the following compound-command to a root terminal to check for and conditionally reset user/group perms & ownership
   

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rpm -Va polkit\* && echo -e "\e[1;32mpolkit* rpm verification passed\e[0m" || { echo -e "\e[1;33mResetting polkit* rpm user/group ownership & perms\e[0m"; rpm --setugids polkit polkit-pkla-compat; rpm --setperms polkit polkit-pkla-compat; }
    Reboot
    A reboot of the machine will be required to make sure that all changes take affect and that polkit has reconnected to the dbus
   

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shutdown -r now

I hereby declare @NFT the winner! 

A simpler method (mount modification) was posted a while back that appears to have cleared the warning. As to whether it is/was effective, is another matter.

Also tnx to the @NFT,
solved also by my side.

Also tnx to the @NFT,
solved also by my side.

Just notice,
temporally solved.

Problem still exists, yesterday I noticed the same message for crond .

Is there any solution?! It seems that there is existing problem with CentOS 7.6, even on 7.8.
It doesn’t look promising that the RedHat team will address this any time soon.

On centos 7, there are instances where you get the error Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject
Error registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject (polkit-error-quark, 0)

This usually happens when trying to restart a systemd service.

The workaround is as follows:

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groupadd -g 23 nohidproc
usermod -a -G nohidproc polkitd
mount -o remount,rw,hidepid=2,gid=nohidproc /proc
systemctl restart polkit

Add the following in /etc/fstab as well

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echo "proc /proc proc defaults,hidepid=2,gid=nohidproc 0 0" >> /etc/fstab
After mount the new mountpoint

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mount -a

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systemctl restart polkit
Done.


https://www.awaludin.net/how-to-fix-gdbus-errororg-freedesktop-policykit1-error-failed-centos-7/

I can confirm @daniellopesjp solution just worked for me.

Now I can run sh /scripts/update_cwp without these two warnings:

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Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject
Error registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject (polkit-error-quark, 0)
Thanks!

I can validate this fix also. Thanks!

works for me too

I got error

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svxxx.xxx polkitd[9231]: Unregistered Authentication Agent for unix-process:9501:31436 (system bus name :1.37, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.
Any help for me?
I can't start apache

this is not any error ots some issue with new version of centos 7.8 you can disable secure processes to suppress this message.

thank you

Hello,
I am not able to securely mount my CWP disks. Problem do remains and it is not good for a PRO panel.