The requested Workflow action failed

Issue: The requested Workflow action failed

I got following error \”The requested workflow action failed.\” when I click on Email Approval link!

AX: AX 2012 R3
OS: Windows Server 2012 R2
SQL: SQL 2014

Solution:

1. Redeploy SysWorkflowApprovalServices and SysWorkflowApprovalServiceGroup

We can do this in AOT (ctrl+d) then got to service groups and 

Go to SysWorkflowApprovalServices and 

SysWorkflowApprovalServiceGroup

right click on it and click Redeploy one by one.

and 

2. Deactivate and Activate EmailApprovalServices (It might of different name in your company)

Go to Microsoft Dynamics AX, click System Administration > Services and Application integration framework > Inbound ports look for EmailApprovalService Deactivate and  Activate again and re-test!