"kblau" wrote:

> The full error is 'could not load file or assembly
> 'Microsoft.ReportViewer.WinForms, Version=8.0.0.0, Culture=neutral,
> PublicKeyToken=b03f... or one of its dependencies. Failed to grant minimum
> permission requests. (Exception from HRESULT:0X80131417)
>
> This error is itermittent, not related to a specific user and comes and goes
> when the Microsoft report service viewer code is run in a .NET C# Windows
> application.
>
> User logs onto a terminal server session (Remote Desktop Connection), this
> is the way they do it, and then clicks on a batch file that starts the
> MyApp.exe that sits on a shared network drive on server 'B'. So to recap,
> the user is executing the application that is on a shared network drive. All
> the app dll's are on this shared drive. The error occurs when the user runs
> the Microsoft report services viewer code (microsoft.ReportViewer.WinForms),
> while other Dlls on server 'B' ,same directory, do not have this intermitent
> problem.
>
> I checked the code access security and it is set correctly. Everything is
> reset to defaults plus a machine policy exists that allows FullTrust to the
> URL (server 'B') 'file://serverB/sharedDrive'. If I testingly take away
> this policy the MyApp.exe will not even start, so I know CasPol is ok.
> Effectivly the Intranet Zone allows full trust to the shared drive running
> myApp.
>
> To make matters more complex:
> The code does some Identity impersonation, changing windows identity to have
> access to do I/O on a particular network drive.
>
> But, with CAS and ACL(user security) not changing, the
> Microsoft.ReportViewer.WinForms assembly should consistenly run correctly or
> error out, not itermitently do either one.
>
> Could this bug be related to the terminal server sessions using a shared
> network drive. Testing with different terminal server user id's shows that
> (possibly coincidentally) the problem happens mostly with the second usage of
> a new user id.
>
> How can I get the bottom of this?
>
> --
> Ken Blau
> ken.blau@cox.net
> Developer