Specifying uploadReadAheadSize in ASP.NET Web.config

Question

For a problem that I am facing I need to increase the uploadReadAheadSize from 49K to 10M. I am able to change IIS's setting with

appcmd.exe set config "MyWebServicesSite" -section:serverRuntime /uploadReadAheadSize:10485760 /commit:apphost

which results in the applicationhost.config containing:

<location path="MyWebServicesSite" allowOverride="true">
    <system.webServer>
        <serverRuntime uploadReadAheadSize="10485760" />
    </system.webServer>
</location>

However, I am publishing my app to a remote server on which I dont have direct control on IIS's setting.

How can I put this setting in Web.config?

My attempts:

Adding the following inside <system.webServer>

<serverRuntime uploadReadAheadSize="10485760" />

Results: 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".

Adding the following under <configuration>:

<location path="EmsPublisherWebServicesSite" allowOverride="true">
    <system.webServer>
        <serverRuntime uploadReadAheadSize="10485760" />
    </system.webServer>
</location>

Results: No effect

Any help would be appreciated

Understad more about the problem now. The main problem is the setting being locked. How can it be overridden in Web.config? — UKM
– UKM, Commented Jan 19, 2017 at 20:53

Spencer Sullivan · Accepted Answer · 2017-07-13 12:48:02Z

5

If you do not have direct access, maybe you can request the other Admin to change the entry for you. It would be:

<section name="serverRuntime" overrideModeDefault="Allow" />

This matches with your:

<system.webServer>
<serverRuntime uploadReadAheadSize="10485760" />
...

answered Jul 13, 2017 at 12:48

Spencer Sullivan

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Comments

double-beep · Accepted Answer · 2019-05-22 11:44:07Z

3

Run the following command in the command prompt as administrator:

%windir%\system32\inetsrv\appcmd.exe unlock config -section:system.webServer/serverRuntime

See Adding serverRuntime tag in webconfig cause 500.19 error

edited May 22, 2019 at 11:44

double-beep

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answered May 22, 2019 at 11:41

Snok

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