""WenJun Zhang[msft]"" wrote:

> Hi mlai,
>
> Glad to see you've figured out the problem. Yes, this is a known issue of
> running IIS in 32 bit mode on a 64 bit Windows operating system.
>
> The root cause of this issue is: when we run aspnet_regiis -i or
> aspnet_regiis -config under Microsoft.NET\Framework directory, it will
> screw up the 64bit registration for MMC, ASP.NET tab will disappear, i.e:
> as long as 32bit aspnet_regiis is run, 64bit MMC won't work. If we run
> aspnet_regiis -i -enable under Framework64, ASP.NET tab will show on MMC
> again.
>
> As the following Knowledge Base article described, the solution is to use
> the command line tool to configure different versions of ASP.NET.
>
> How to switch between the 32-bit versions of ASP.NET 1.1 and the 64-bit
> version of ASP.NET 2.0 on a 64-bit version of Windows
> http://support.microsoft.com/?id=894435
>
> To configure on individual web application/virtual directory level, you can
> run:
>
> aspnet_regiis -s <path of the application>
> (Install scriptmaps for this version at the specified path, recursively.
> Existing scriptmaps of lower version are upgraded to this version.)
>
> E.g. aspnet_regiis.exe -s W3SVC/1/ROOT/SampleApp1
>
> OR
>
> aspnet_regiis -sn <path of the application>
> (Install scriptmaps for this version at the specified path,
> non-recursively. Existing scriptmaps of lower version are upgraded to this
> version.)
>
> Have a nice day.
>
> Sincerely,
>
> WenJun Zhang
>
> Microsoft Online Community Support
>
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