HTTP Error 500.21 – Internal Server Error

Problem:

Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its module list

Detailed Error Information

Most likely causes:

• Managed handler is used; however, ASP.NET is not installed or is not installed completely.
• There is a typographical error in the configuration for the handler module list.

Things you can try:

• Install ASP.NET if you are using managed handler.
• Ensure that the handler module’s name is specified correctly. Module names are case-sensitive and use the format modules=”StaticFileModule,DefaultDocumentModule,DirectoryListingModule”.

Links and More InformationIIS core does not recognize the module.

Solution:

Solved After Re-installing the ASP.net:

Remember: Launch command prompt, as administrator before run below command;

%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -i

Note: path may vary depending upon version.

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