Last week I upgraded my lab to vSphere 5.5, during the install I entered the hostname to configure domain authentication but I received this error:

Error: Invalid hostname. FQDN is required for joining a domain

Solution:

Goto Network > Address > Hostname

Add the domain information in the hostname box, sample:

After this change I was able to configure AD authentication:

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

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