SMSDI-X-256: An attempt was made to read or write when that access was not granted.

SMSDI-X-256: An attempt was made to read or write when that access was not granted.

Source: SMSDI.NLM

Possible Cause: Access has been denied because another application has reserved the requested device or medium.

Action: Before proceeding with the read or write operation, select a medium or device to which the user has access and make sure that access was granted.