“The page was not displayed because the request entity is too large.”
I think this will fix the issue IF you have SSL enabled:
Setting uploadReadAheadSize in applicationHost.config file on IIS7.5 would resolve your issue in both cases. You can modify this value directly in applicationhost.config.
1) Select the site under Default Web Site
2) Select Configuration Editor
3) Within Section Dropdown, select “system.webServer/serverRuntime”
4) Enter a higher value for “uploadReadAheadSize” such as 1048576 bytes. Default is 49152 bytes.
During client renegotiation process, the request entity body must be preloaded using SSL preload. SSL preload will use the value of the UploadReadAheadSize metabase property, which is used for ISAPI extensions
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