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IIS applies a built-in filter that limits the size of HTTP requests, set to 30 MB by default. An action on a Web Station that exceeds the limit reports Cannot connect to 'AppServer' (error code: (HTTP 413, 19, 0)).

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Raise the request size limit

1

Open IIS Manager

Click Control Panel → System and Security → Administrative Tools → Internet Information Services (IIS) Manager.
2

Open the filtering settings

Navigate to Sites → Default Web Site → FlexiCapture12 → Server → Request Filtering.
Screenshot of IIS Manager with the Request Filtering settings open under Sites, Default Web Site, FlexiCapture12, Server.
3

Edit the feature settings

On the Hidden Segments tab, click Edit Feature Settings.
Screenshot of the Hidden Segments tab in IIS Request Filtering with the Edit Feature Settings command available.
4

Set the new limit

In the Edit Request Filtering Settings dialog box, enter a value in the Maximum allowed content length (Bytes) field, then click OK.
Screenshot of the Edit Request Filtering Settings dialog box with the Maximum allowed content length field highlighted.