Sharepoint Troubleshooting: Failed to download chart or image
Issue
After creating a chart and uploading it to the site, the error "failed to download chart or image" appears.
Cause
In Excel Service, there is a file size limit in the configuration. Large graphs may cause this to fail. By default, it is 1 MB. If a chart is bigger than that it won't render.
Solution
To solve the issue, please use the steps below:
- Go to Central Administration->Application management->manage service applications->Excel services application->Trusted File Locations.
- Edit the Trusted File Location, change Maximum Chart or Image Size to 50 and Maximum Concurrent Queries Per Session to 50.
- Go to Global Settings, change Memory Cache Threshold to 95.
See more at: http://expertsharepoint.blogspot.de/2014/08/failed-to-download-chart-or-image.html
Note
If you find a different solution, please report it as a comment to this post. This will be useful to the SharePoint Community. Be sure to double-verify it: undo your solution and verify that the problem comes back, then redo it and verify that the problem goes away.