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Microsoft flow Expression Based64ToString problem

Hi All,


Does anyone have issue with Based64ToString expression?


I am trying to convert string value to Based64ToString for note / attachment content into CRM. But once i save the Flow the expression will just disappear.


Screenshot of problem as below:-

When save

When Save.png


After save and click edit Flow again , the Expression will disappear and left the original trigger data.

After Save the DAta.png



Shee Hao


Community Support
Community Support

Hi @Shee_Hao,


Thanks for your feedback, the issue is confirmed on my side. In addition, the user @FBaldwin has faced same issue with you and I have made a response to it. Please check the following thread:


I think the base64ToString() function has taken effect, this issue seems to be related to the display issue within Microsoft Flow. Please take a try to run your flow to check if the base64ToString() function has also taken effect on your side.


I have posted this issue to my product team, if this issue is solved, I would reply here.


Best regards,


Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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