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• 09-06-2008, 3:48 PM

  xiolink Joined on 09-06-2008, 3:45 PM Posts 3	IIS 32-bit to 64-bit upgrade Reply Contact Hello,  I have a server running Windows 2003 Server R2 Standard x64 Service Pack 2.  I would like to know 2 things. 1.) How do I determine if I am running IIS in 32-bit or 64-bit? 2.) How do I change it from 32-bit to 64-bit?  Add-on question, what are some GENERAL considerations in doing so? Any help is appreciated. Thanks, Xiolink

• 09-06-2008, 4:50 PM

  In reply to

  mukhtard Joined on 07-07-2008, 9:13 PM Redmond, WA Posts 165

  Re: IIS 32-bit to 64-bit upgrade Reply Contact In IIS6 this is configured through w3svc/apppools/enable32BitAppOnWin64 and is a global setting. To review your setting run "cscript c:\inetpub\adminscripts\adsutil.vbs enum_all w3svc | findstr /i enable32bit", if nothing comes back, you're using the default (64-bit on x64). To set it to 64 bit, you can run the following command: cscript %SYSTEMDRIVE%\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 0 As to why you would want to run your worker process as 32-bit on a x64 OS: Running ASP.NET v1.1 applications - v1.1 is x86 only In hosting scenarios - the OS can leverage virtually unlimited address space while limiting the applications running as 32 bit to 4GB virtual address space. Running applications as 32 bit also perform better and use less memory. Thanks, Mukhtar Desai IIS Performance Team

• 09-06-2008, 6:27 PM

  In reply to

  xiolink Joined on 09-06-2008, 3:45 PM Posts 3	Re: IIS 32-bit to 64-bit upgrade Reply Contact Thank you for your response.  Is a reboot of the server necessary?  Or restarting the IIS service good enough?

• 09-06-2008, 6:34 PM

  In reply to

  mukhtard Joined on 07-07-2008, 9:13 PM Redmond, WA Posts 165	Re: IIS 32-bit to 64-bit upgrade Reply Contact iisreset should be good enough here. Thanks, Mukhtar Desai IIS Performance Team

• 09-06-2008, 6:51 PM

  In reply to

  xiolink Joined on 09-06-2008, 3:45 PM Posts 3	Re: IIS 32-bit to 64-bit upgrade Reply Contact thanks again.