Showing results for 
Search instead for 
Did you mean: 
Not applicable

Validate if Office 365 user exist

Hello All

i need to validat eif a user exist in office 365 i read a sharepoint list and run a "User search" but i dont know how to know if the response is empty :(, if this is empty i undesrstand the user doesnt exist else the user existe and i get his email.


do u know some way to validate this

Memorable Member
Memorable Member

Hey @Anonymous



You could use the Search for users action to know if an user exists or not.

And then Get user profile action to get the UPN or email from the user that has been searched.


I recreated your Flow with your information given.



Hope this helps


Kind regards





If this reply has answered your question or solved your issue, please mark this question as answered.

Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up.

Community Support
Community Support

Hi @Anonymous,


Have @Tom_Slosse's answer solved your question?


Do you want to check if the response of the "User search" is empty?


You could use "Search for users" action to search the user,please refer to screenshot below to create the flow:




The expression in the condition as below:

@equals(length(body('Search_for_users')), 0)


The flow would run successfully to check if the user exists.

If the user exists, the flow would get the user's email as screenshot below:



If the user don't exists, the flow would do nothing as screenshot below:






Alice Zhang

Helpful resources

Process Advisor

Introducing Process Advisor

Check out the new Process Advisor community forum board!

MPA User Group

Welcome to the User Group Public Preview

Check out new user group experience and if you are a leader please create your group

MBAS on Demand

Microsoft Business Applications Summit sessions

On-demand access to all the great content presented by the product teams and community members! #MSBizAppsSummit #CommunityRocks

MBAS Attendee Badge

Claim Your Badge & Digital Swag!

Check out how to claim yours today!

Users online (89,758)