# Reset a engine's local user database

You can replace the engine’s local copy of the user database with a copy of the internal user database on the Management Server.

##

If you use the internal user database of the SMC, the user information is stored centrally on the Management Server. When changes are made, they are incrementally replicated to each engine node to guarantee fault-tolerant authentication. If necessary, you can perform a full synchronization manually.

For more details about the product and how to configure features, click Help or press F1.

## Steps

1. Right-click a Single Engine or individual nodes of a Engine Cluster and select Commands > Reset User Database.
2. Click Yes in the Confirmation message.
   The node’s local copy of the user database is replaced with a copy of the internal user database on the Management Server.