How to increase the upload limit, to store bigger files.

The default limit is 16 MB for uploading a document in Web Client. To increase this limit you have to modify the web.config (default C:\inetpub\wwwroot\dwwebclient\web.config):
Please back-up the file before modifying!
The value has to be set in Kilobytes e.g. 200 MB is 204800
<httpRuntime maxRequestLength=“204800" ... />

If IIS7 is used, you have to add also following lines in section system.webServer.
The value here has to be set in Bytes e.g. 200 MB is 209715200 
   <requestLimits maxAllowedContentLength="209715200" />

For Versions above 6.1:
go to DocuWare\Web\Platform\Web.config and change the value of the parameter maxRequestLength="102400" in kb. For example:
    <httpRuntime targetFramework="4.6.1" requestValidationMode="2.0" maxRequestLength="102400" enableVersionHeader="false" />