While opening the solution user is getting an error "An Error occurred on the server - Maximum request length exceeded"
Composer, Foundation, Central
Go into IIS Manager and do the following:
Select the Winshuttle Composer site -> Double click Request Filtering under IIS
Click on Edit Feature Settings...
Update Maximum allowed content length (Bytes) to: 300000000
Open the Composer web.config file and search for the following:
Change the following key to this value <jsonSerialization maxJsonLength="2147483647" />
Change this key to this value <requestLimits maxAllowedContentLength="500000000" />
CHange this key to this value <httpRuntime targetFramework="4.5" requestValidationMode="2.0" maxRequestLength="2097151" executionTimeout="900"/>
Open the SharePoint web.config file (C:\inetpub\wwwroot\wss\VirtualDirectories\<web app name> )and search for the following:
Change all instances of this key to this value <httpRuntime maxRequestLength="2097151" executionTimeout="3600" />
Also change the settings https://blogs.technet.microsoft.com/sammykailini/2013/11/06/how-to-increase-the-maximum-upload-size-in-sharepoint-2013/
Once these have been changed, reload Composer and attempt to publish the form.