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Helper III
Helper III

OAuth 2 how to re-authenticate/refresh an expired token

Hi all,


So I've managed to setup a O-Auth2 Power Automate function that will automatically use credentials to retrieve and return a access token. This Flow can be called by other Flows so long as they pass the credentials to it.




Now this works perfectly and the access token can be used to make API requests to the designated endpoint. The question is that the token only lasts 20 minutes and the returned access token also contains a line that indicates in seconds when it will expire. Is there a way to use this to setup a auto-refresh of the token if another Flow that's using this function takes longer than 20 minutes to call?



Community Support
Community Support

Hi @Mick282,


You could create a Do-Until action to put these actions into it, for we could control the recall times, we could initialize a integer variable before it, for example:Annotation 2019-11-27 151428.png


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

Thanks @v-litu-msft .


That's a good idea. How would this work from a perspective of updating the access token on a calling flow?


My flow used to get the access token is just a function that a second Flow uses to get the access token to then perform a action. Below is the second flow that actually performs an API action once it has retrieved the access token.



New Member

Hello, @Mick282 ! Could you explain how you filled in the fields from each action, please?

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