How can I remove 2FA logon protection from Virtual System Administrator

If you are using Virtual System Administrator R7 - newer, R9.2 you can disable MFA in the Database.

Open SQL Management Studio. Navigate to ksubscribers > Tables >  dbo.AA_Settings 

Change the Value of TFALogonDisabled to 1

This will effectively disable the 2FA requirement for your VSA Server. To re-enable 2FA change the value to 0.

Note: You can download SQL Management Studio 2014 here.