Error Message:

VCS ERROR V-16-1-11356 SecInfo is not set. Use 'vcsencrypt -gensecinfo' for generating SecInfo.
VCS ERROR V-16-1-11399 Failed to create user.

The following error is seen if the configuration is not dumped after generating the key:

VCS ERROR V-16-1-11502 IV value is NULL or not dumped in memory.
VCS ERROR V-16-1-11399 Failed to create user.

The security key is not generated to allow the hauser command to complete.

1) Generate the security key using the vcsencrypt command as below:

Linux:
# /opt/VRTSvcs/bin/vcsencrypt -gensecinfo   

Windows:
# vcsencrypt -gensecinfo  

Enter any passphrase. This is a temporary passphrase which does not need to be stored.

2) Dump the configuration after generating the security key

# haconf -dump

3) Change VCS to read-write mode, if needed

# haconf -makerw

4)  Add or update the user 

Add User:
# hauser -add -priv Administrator

Update User password:
# hauser -update  

5) Save the configuration and change VCS mode to read-only.

# haconf -dump -makero