This issue occurs because when we supply a password for root on VCH using VIC-MACHINE-XXXX debug --rootpw, the VCH console does not accept the password.
Resolution
VCH is a Photon OS based OS and we should consider supplying a password which meets the complexity of password requirement for photon OS if this is not fulfilled the password will not work.
As per the Photon OS documentation, you must set the root password to a complex string containing no common words or names. Photon OS rejects a root password that contains simplistic patterns, common words, or words derived from the name of your account.
Disclaimer: VMware is not responsible for the reliability of any data, opinions, advice, or statements made on third-party websites. Inclusion of such links does not imply that VMware endorses, recommends, or accepts any responsibility for the content of such sites.