EXECUTE permission denied on object 'aspnet_CheckSchemaVersion', database 'myDB', schema 'dbo'.

Problem

Today I launched the aspnet_regsql.exe.  Unfortunately I received the following error:

EXECUTE permission denied on object 'aspnet_CheckSchemaVersion', database 'myDB', schema 'dbo'.

Solution

Take the properties of the “NT Autority\Network Service” user.  Select the myDB database and add all the necessary Roles like aspnet_Membership_FullAccess to the user. 

In the screenshot are all the databaseroles added.