You need to install Microsoft .NET Framework on Enterprise Vault servers. The minimum version of .NET Framework is 2.0 but you need a later version if you intend to use Compliance Accelerator or Discovery Accelerator.

For more details, see the Enterprise Vault Compatibility Charts (http://entsupport.symantec.com/docs/276547).

If necessary, you can download .NET Framework using the link in the Links to related software folder on the Enterprise Vault media.