Hi all,

Has anyone come across this issue? We are in the process of upgrading a customer site from Umbraco 8 to 13, and during the test phase, they updated one of their pages. While they are logged in to the back office, the images show fine when they view the page (even if they browse directly to the page rather then using the preview function in the back office). However if they view the page in a private session or another browser, the images dont show. The HTML is the same, but when not logged in it does not return the image.

When it works, the network trace shows the request to the GetBigThumbnail returns a redirect to

/media/ao5d2tk2/new-4.png?rmode=max&width=500&v=1db417505ef73b4

When it fails instead of redirecting to the media file it redirects to the url below instead

/umbraco/backoffice/umbracoapi/images/GetBigThumbnail?originalImagePath=%2Fmedia%2Fao5d2tk2%2Fnew-4.png

Has anyone come across this before? Does anyone have any suggestions as to why it works when the user is logged into the back office, but fails if the user is not logged in?

Thanks

Kap.