VMware Support AlertVMware has become aware of an issue that may occur if you use Microsoft SQL Server 2005 SP4 as your vCloud Director database, you will not be able to successfully upgrade to (or do fresh install) vCloud Director 5.5.0

VMware is currently investigating this issue. The problem occurs only with the specific database version mentioned.

For more information and updates on this matter, reference Knowledgebase article: Unable to install or upgrade to VMware vCloud Director to version 5.5.0 when using SQL Server 2005 SP4 (2060068).