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Workflow Hero

Exchange Online Create Calendar Item for Office 365 - error username or password is invalid

Trying to send a meeting request from my calendar to a co-worker, using Exchange Online Create Calendar Item for Office 365.  I set-up my user with impersonation. Still I get an error "The username or password is invalid."  I'm using the upn email address to authenticate.

What am I missing? Any ideas?

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Workflow Hero

Re: Exchange Online Create Calendar Item for Office 365 - error username or password is invalid

Probably Username defined in the workflow doesn't have the permission to impersonate the User to impersonate?

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Workflow Hero

Re: Exchange Online Create Calendar Item for Office 365 - error username or password is invalid

Hi ‌, how is this going on your side?

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Workflow Hero

Re: Exchange Online Create Calendar Item for Office 365 - error username or password is invalid

We are running Exchange Hybrid. Once I created an Exchange Only account the error was resolved.

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Workflow Hero

Re: Exchange Online Create Calendar Item for Office 365 - error username or password is invalid

In my case, the user account I'm using to authenticate with Exchange Online has permission to impersonate every user, but I still get this cryptic error message: 

Error when creating calendar item: Reason: The service is not able to generate a response for the request. Error: 
Unable to create calendar item. Error: An internal server error occurred. The operation failed., Mailbox '.....'

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