root account login issue on SDDC Manager

Hi All,

I have an issue with the "root" account on SDDC Manager. Even when the password is correct it says "Authentication failure".

After changing the password from grub menu as well, it gives the same error. I logged in to SDDC Manager via "vcf" account and tried to switch to "root" account but doesn't work.



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  • ll

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You will 1st have to unlock the account run the below command . 


pam_tally2 --user=root--reset


if you have already tired the above then , there is one know issue in VCF 4.2 & 4.2.1 which is fixed in VCF 4.3 

try the below 

  1. Comment out (#) the last line in /etc/pam.d/system-password file. Alternatively change the number of "remember=5" to "remember=0".
  2. Update the password using passwd (make sure the password meets complexity requirements).
  3. Remove # (comment) from the last line in /etc/pam.d/system-password file to restore the original contents of the file/config. Alternatively change the number of "remember=0" back to "remember=5"

pam_tally2 -u root

Thanks & Regards,

Mohammed Viquar Ahmed