Hi all,

In a plesk 8.6 environment (shared hosting), I'm constantly struggling with the creation of directories by dnn. I've managed to maintain my dnn installation in the root (httpdocs) for years up until now, upgrading to 5.0.0. Ok, I gave up my requirement for a nicer URL and moved the entire app to a virtual directory named 'portal'. This way I can set the permissions for IUSR_x and IWPD_x. The site runs on medium trust. I completely don't understand why it's not possible to set the permissions on the httpdocs directory, but that's another question...

But I still get in trouble when the site is creating directories. During installation a zip file is unpacked into Portals\_default\Temp and the directory name is random. So, I'm never able to 'help' the installation by creating directories myself.

Since the SecurityException for the FileIOPermission does not state the name of the directory (for security reasons I suppose) I created custom DotNetNuke.dll to be able to see the exact dircectory name. That's how I managed to find out the name: C:\inetpub\vhosts\domain.com\httpdocs\portal\Portals\_default\Temp\2fsjdhkb

Why do I get an FileIOPermission security exception when Plesk setttings are correct (checked and double checked)?
Does anyone know why the creation of directories fail? Or some hints maybe?

Best regards,
Geert Doornbos

Thank you for your response Cathal. I already came to the same conclusion. The question should be: why do I get a FileIOPermission security exception. In the Plesk environment I see for both users IUSR_ and IWPD_ on webdirectory as well as on folder permissions: 'Full Control'.

I don't have an 'impersionation' element in web.config, so the code in the app pool runs as user IWPD_x. I've checked this to be sure: System.Security.Principal.WindowsIdentity.GetCurrent().Name

So, basicly, why can't IWPD_x not create a directory?

Thanks again Cathal. I've got a response from my hosting provider (prioserve.net), who suggested to add the impersonation element to the web.config:
<identity impersonate="true"/>  I should have tried that myself of cource :-)

So I did and now the code is executed as IUSR_x and it worked! Surprisingly, IUSR_ has permissions and IWPD_ has not.
(Can't find the differences anywhere...)

In the mean while, I also found: http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/107/postid/124684/scope/posts/Default.aspx

I hope not to run into other problems, now i'm impersonating...

Thanks