Maximum Length of root Password for vSphere vCenter

Products

• VMware vCenter Server

Issue/Introduction

In attempting to set a root password for vCenter, and using a password generation tool to make it more secure, the maximum length of password needs to be known.

Environment

vSphere vCenter 7.x and above.

Resolution

There is no maximum for the root password for vCenter, as it is based on Photon OS. One can set a policy to set a maximum, but the default is no maximum.

Additional Information

Esxi has a default  maximum of 40 characters per our vSphere documentation.

While there are NO maximums set by the OS, there may be limitations for tools used to sign in to the vCenter as root. There may also be restrictions in those tools as to character sets that can be passed. Please see the documentation for the tool you are using for any other restrictions on sending passwords in automation.