Hi I can open the master key...

USE tempdb

GO

OPEN MASTER KEY DECRYPTION BY PASSWORD = 'password'

but when i tried following qquery it give me an error,

use tempdb

go

BACKUP CERTIFICATE SQLServerTDECertificate

TO FILE = 'C:\Users\RawalPr1\Desktop\T1\MySQLCert.bak'

WITH PRIVATE KEY (file='C:\Users\RawalPr1\Desktop\T1\MySQLCertKey.pvk',

ENCRYPTION BY PASSWORD='password')

error:

Cannot write into file 'C:\Users\RawalPr1\Desktop\T1\MySQLCertKey.pvk'. Verify that you have write permissions, that the file path is valid, and that the file does not already exist.

what to do next?

I also tried on several other location except this..but still the same replay.

thanks.