Web Adaptor 500.19 Internal Server Error

[DouglasLong]

I installed Web adaptor, having issues getting it to run properly. cant access the configuration page.

I get the following error, any thoughts?

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:\inetpub\####\arcgis\web.config

Requested URL	http://####/arcgis/webapaptor
Physical Path	C:\inetpub\###\arcgis\webapaptor
Logon Method	Not yet determined
Logon User	Not yet determined

Config Source:

  272:   273:         <handlers>  274:             <remove name="StaticFile" />

More Information:

This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.

View more information »

[DouglasLong · Accepted solution]

nevermind, I solved it by uninstalling net framework 4.5 and reinstalling (im on windows server 2012 R2).

[LHo]

We had a similar issue in ArcGIS Web Adaptor 11.3 fresh install where we installed the .NET hosting bundle 8.0.11 as the first prerequisite install. We saw an error code: 0x800700d. 

We needed to run a repair on the .NET installation for it to work.