Access Denied to report file on Windows Server 2003 Enterprise

Question

Hi,
I have a deployment problem for which I am out of ideas. I have an ASP.NET web site deployed on a server running Windows Server 2003 R2, sp2.  It makes extensive use of Crystal Reports, including both displaying them and e-mailing them to specified recipients as PDF files. It all works great.
Now I need to port the web site to a different server, running Windows Server 2003 Enterprise, sp1. The reports display fine as long as I am not trying to convert it to PDF for e-mailng. When it gets to the following line in my code:
MemoryStream memStream = (MemoryStream)rptDoc.ExportToStream(ExportFormatType.PortableDocFormat);
It reports the following error:
Access denied.Error in File JobDetails {DC64A5D3-9DD7-4E4C-90F5-A08731409B29}.rpt:
Access to report file denied. Another program may be using it.
I finally got it to work by granting Modify permission to Everyone for the c:\Windows\Temp folder. Obviously this is not a good practice.  Granting Full Control  to the IUSR_servername account did not solve the problem on Windows Server Enterprise, although it did the trick on R2.
So the question is, which account needs which permission to the Temp folder to enable the PDF to get written?
Thanks.
Dan

Answer 1

What ever account the app is running under will need read / write permissions on the temp folder. Your working server should be a good place to look to see how the premissions were set there. The same will apply to any other server(?).
Ludek
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