Application not deploying

deployment aborted : file:/C:/DOCUME_1/ADMINI1.IN-/LOCALS~1/Temp/temp7981Web.ear

Aborted: development component 'Web'/'local'/'LOKAL'/'0.2007.06.06.15.58.58':

Caught exception while checking the login credentials for SAP J2EE Engine. Check whether the SAP J2EE Engine is up and running.

com.sap.engine.deploy.manager.DeployManagerException: ERROR: Cannot connect to Host: [increv-015] with user name: [admin] Check your login information. Exception is: com.sap.engine.services.jndi.persistent.exceptions.NamingException: Exception while trying to get InitialContext. [Root exception is com.sap.engine.services.security.exceptions.BaseLoginException: Cannot authenticate the user.]

(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.checkLoginCredentials.DMEXC)

Deployment exception : The deployment of at least one item aborted