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Good day!

Today without any changes in K2 or Exchange Online we have had issues in ALL 'send e-mail' activity "SourceCode.Workflow.Shapes.EWS: Autodiscover not available and mail cannot be sent. Reconfigure K2 server with valid Exchange settings."

Unfortunately, I don't have another O365 tenant or on-premise exchange server to test it with other settings. K2 Five (5.4) FP53.

What can I do to fix or deeper investigate this issue?

Hi 



 



Please check out this article which deals with Exchange emails not working
Exchange emails not working 
Or 



Try running the K2 Setup manager for configuring your Exchange Server


Thanks for all! The issue was solved with KB manual
https://community.nintex.com/t5/Technical-Issues/K2-and-TLS-1-2-Support/ta-p/124200

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