I've Created my self-signed Certificate in my local and uploaded in the Azure Key Vault.So that i can use it for my always Encrypted (column Encryption in Azure SQL DB)
Initally I experienced with Purge issue and solved it here
Proceeding further I get the Error While Performing my Encrypted Operations
This is my Log file
Jul 6 2017 16:01:16: Log opened. TraceLevel:Informational
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message:Source database settings.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: Source server name: xxx.database.windows.net.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: Source database name: db.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message:Create new encryption key.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: New encryption key: CEK_Auto1.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message:Encrypt column blobname.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: Table name: filenames.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: Encryption key name: CEK_Auto1.
Jul 6 2017 16:01:37 [Informational] WizardSummary: Message: Encryption type: Deterministic.
Jul 6 2017 16:01:38 [Informational] WorkitemExecution: Message:Work item 'Generate new column encryption key CEK_Auto1' started..
Jul 6 2017 16:01:38 [Informational] TaskUpdates: Message:Task: 'Generate new column encryption key CEK_Auto1' -- Status: 'Started' -- Details: 'Task 'Generate new column encryption key CEK_Auto1' started ....'.
Jul 6 2017 16:01:40 [Informational] TaskUpdates: Message:Task: 'Generate new column encryption key CEK_Auto1' -- Status: 'Completed' -- Details: 'Task 'Generate new column encryption key CEK_Auto1' completed'.
Jul 6 2017 16:01:40 [Informational] WorkitemExecution: Message:Work item 'Generate new column encryption key CEK_Auto1' stopped..
Jul 6 2017 16:01:40 [Informational] WorkitemExecution: Message:Work item 'Generate new column encryption key CEK_Auto1' completed successfully!.
Jul 6 2017 16:01:40 [Informational] WorkitemExecution: Message:Work item 'Performing encryption operations' started..
Jul 6 2017 16:01:40 [Informational] TaskUpdates: Message:Task: 'Performing encryption operations' -- Status: 'Started' -- Details: 'Task 'Performing encryption operations' started ....'.
Jul 6 2017 16:02:15 [Informational] TaskUpdates: Message:Task: 'Performing encryption operations' -- Status: 'Failed' -- Details: 'Task failed due to following error: Unknown external data source type'.
Jul 6 2017 16:02:15 [Informational] WorkitemExecution: Message:Work item 'Performing encryption operations' stopped..
Jul 6 2017 16:02:15 [Error] WorkitemExecution: Message:Work item 'Performing encryption operations' did not complete. Details: Unknown external data source type.
Jul 6 2017 16:02:15 [Informational] Log Closed: Message:Job processing completed.
The main error is unknown External Data Source Type
I can able to overcome this error with my other Azure DB which was Standard Pricing Tier
This Issue solved in SSMS V17.2
You can download the latest version from here