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HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information:

Module
IIS Web Core

Notification
BeginRequest

Handler
Not yet determined

Error Code
0x80070021

Config Error
This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".

Config File
\?\C:\Program Files\ProGet\WebApp\web.config

Requested URL
http://localhost:80/proget

Physical Path
C:\Program Files\ProGet\WebApp\proget

Logon Method
Not yet determined

Logon User
Not yet determined

Config Source:
35: </security>
36: <handlers>
37: <remove name="rules-ISAPI-4.0_64bit" />

Product: ProGet
Version: 4.8.5

Based on that error, it sounds like ASP.NET 4.5 is not enabled on your server; this is a separate role feature you must install on your computer/server. It could also be a configuration error, as the message suggested, and you've prevented proget's web.config from removing those handlers at the machine level. In this case you'll need to use the built-in web server, or fix the configuration.

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