Core Issue
The probable cause of an IP phone displaying this error message is that the Phone Productivity Service (PPS) Dynamic Link Libraries (DLLs) could not be registered during installation.
Resolution
To register DLLs, perform these steps:
- Stop the Internet Information Server (IIS) web server and the Cisco Telecaster UMClient service on the PPS server.
- Go to the <PPSInstallDir>/bin directory.
- Run the register.bat file.
- Restart the services you stopped earlier.
Note: You also may want to verify the subscription. For more information, refer to Subscribing to Cisco IP Phone Productivity Services.
For more information about resolving PPS, refer to these documents:
Problem Type
Voice applications (CRS, PA, CCM Plugins, CER, CCC, MeetingPlace, etc.)
Failure Type
Error message
Cannot request a service
When Problem Occurs
When pressing services button
End Where Problem is Heard or Device Type Involved
IP phone
IP Phone Errors
Service Subscription Validation Failed
Voice Applications
IP phone productivity services (PPS)