To remove your Microsoft Dynamics CRM user from the approved users list:
In case of an on-premises deployment, log into your locally deployed Dynamics CRM instance through your domain user and password (active directory credentials).
OR
In case of an Office 365 installation, clear your browser cache andlog into your Office 365 account.
Click the "Service" tab and then click the "Settings" module, as marked with red arrows on the below image.
From the next appearing "Settings" menu, click the "SigningHub Configuration" option being displayed under "Extensions".
Click the "Manage user access to SigningHub" option, as marked with an arrow on the image below.
The "All Users" screen will appear, listing all your Microsoft Dynamics CRM users along with their respective information, i.e. Full Name, Username, Email and SigningHub Status. These users are managed (add/ edit/ delete) by your Microsoft Dynamics CRM administrator.
Select the (activated) user(s) from the list and click the "Make User Inactive" button, as marked with the arrows on the image below.
The status of selected user(s) will be changed to "Blocked" in the list. They will not be able to use the SigningHub app from Dynamics CRM.
Reactivate blocked users To reactivate your blocked users, just add them again in the "Who can access SigningHub" section, seedetails.