Attach the master vault prior to reattaching any vaults or creating new vaults.  
- Launch the Autodesk Data Management Server Console. 
 
- Click Tools 
 Attach Master Vault.  
- Specify the location for the master vault SQL data file, KnowledgeVaultMaster.mdf. 
 
- Specify the location for the master vault transaction log file, KnowledgeVaultMaster.ldf. 
 
- Re-attach any vaults that were previously detached from the master vault or create vaults. 
 
Note: User access permissions are maintained when the master vault database is re-attached.