Do you know 'httpHandlers' or 'httpModules' sections in web.config must contain a 'remove' or 'clear' element?
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If web.config contains a `<httpHandlers>` or `<httpModules>` section, that section must contain a `<remove... />` or a `<clear />` element.
This basically forces developers to explicitly enable inheritance in nested virtual directories. In 99% of cases this developers won't use inheritance on these two sections, however it causes issues when somebody wants to add a module or handler to the parent virtual directory.
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```aspnet
<configuration>
<system.web>
<httpHandlers>
<add verb="*"
path="*.New"
type="MyHandler.New,MyHandler"/>
<add verb="GET,HEAD"
path="*.MyNewFileExtension"
type="MyHandler.MNFEHandler,MyHandler.dll"/>
</httpHandlers>
<system.web>
</configuration>
```
<figureEmbed figureEmbed={ {
preset: "badExample",
figure: "Figure: Bad example",
shouldDisplay: true
} } />
```aspnet
<configuration>
<system.web>
<httpHandlers>
<clear/>
<add verb="*"
path="*.New"
type="MyHandler.New,MyHandler"/>
<add verb="GET,HEAD"
path="*.MyNewFileExtension"
type="MyHandler.MNFEHandler,MyHandler.dll"/>
</httpHandlers>
<system.web>
<configuration>
```
<figureEmbed figureEmbed={ {
preset: "goodExample",
figure: "Figure: Good example",
shouldDisplay: true
} } />