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.

Today, I couldn't attach a database of my previous pc to my new MSSQL Server installation.

I got this strange error message in Microsoft SQL Server Management Studio.

[more]

I got this error message:

Attach database failed for Server 'STELLA'.  (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.3042.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Attach+database+Server&LinkId=20476

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Unable to open the physical file "E:\MSSQL\InfoBase.mdf". Operating system error 5: "5(error not found)". (Microsoft SQL Server, Error: 5120)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.3054&EvtSrc=MSSQLServer&EvtID=5120&LinkId=20476

Solution

The solution was very easy.  Launch Microsoft SQL Server Management Studio as Administrator.