Error While deploy VC Application and Par file

Hi Experts,

The deployment of par or VC application worked fine, but last one week i am getting error while deploying par or VC application.

I am getting pop-up window while deploy VC Application. That pop-up window shows Portal Request Failed. (com/sap/netweaver/bc/uwl/UWLException).

I am getting Error like this, Please Check the user ID and password, while deploying par from NWDS.

I have checked my userid and password, it is correct. I checked with admin userid and password, it shows the same error. it is showing same for my team members userid also.

I have checked logs and traces in server, nothing is logging regarding this deployment error.

Where is the problem, please anybody help me. I am using EP7 SP9.

Thanks and Regards,

Chinnadurai R