base64 image in adaptive card not working in outlook #11978
Labels
bug
teams-developer-support
Question related to extensibility (Bot, ME, Tab) would be marked under this label
Steps to reproduce
I am having an issue with images (base64 source) inside adaptive cards inside outlook.
I have a bot that does link unfurling. Inside teams it works as expected, but when i send the same adaptive card as response to an outlook unfurl request, the image inside the adaptive card is not displayed.
here is the response i'm returning from my bot, so you can reproduce the issue:
Expected behavior
The card image should display without issues, as it does in teams:
Actual behavior
It seems that outlook tries to send the base64 image to some internal endpoint
https://outlook.office.com/actionsb2netcore/[email protected]/th?u={base64_img_here}
that seems to fail.error response:
When i use a URL as the source of the image it displays without issues. (the request mentioned above also returns 200 OK)
Error details
No response
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