Deleting a user from the Acrobat Sign server requires that you first have system authority over that userID. If the user is not in your account, you do not have any authority to delete them.

Find the user in your system

To determine if the user is under your authority:

Log in to Acrobat Sign as a Privacy Administrator.
Navigate to the User tab in the administrator menu.
Select the Options icon (three lines on the far right).
Select Show All Users.
Search for the email address of the user

If the email address is not found within the account, No users available using current filter displays on the screen.

If the user exists, you will have only one record (email addresses are unique).

Delete the user's information

Verify the email address is correct and that you are about to delete the correct userID.

Once the userID is deleted, it is irrevocably gone.

Select the user record to highlight it. This exposes the action links just above the user record.
If the user is in any status other than Inactive, select the Deactivate User link.
- Only Inactive users can be deleted.
Select the Delete User Information link.
Caution:
The Delete User Information challenge opens, indicating the ramifications of what you are about to do.

Deleting a user will:

Cancel any agreements that are currently in process initiated by this user

Disable any active Web Forms created by this user

Prevent any integrations associated with this user from making any API calls

Remove any saved Library Templates created by this user

Remove any reusable recipient groups created by this user

Remove any references to this user in reusable recipient groups created within the account
Just under the warnings, there are three options.

Select the option that suits the situation and then Delete User Information (or Cancel if you are having second thoughts):
- Preserve agreements initiated by this user but remove user information, including the resources above.
  
  Select if the user has created agreements that are still valuable to the company.
  
  Agreements are automatically shared to the account of the Admin, deleting the user (See note below).
  
  Applies only to completed agreements. Agreements in-flight are canceled and deleted.
  
  You can delete these agreements later as needed.
- Remove user information including resources above and all agreements initiated by this user.
  
  Everything is removed.
- Don’t delete user information at this time.
  
  The default option.
Note:
When the Preserve agreements option is selected:

All completed content created by the userID is shared to the Admin account that deletes the user

The email address of the deleted userID is preserved so it can properly be referenced by the history/audit report

Because the email address is preserved, a new user can not be created in the system with that same email value

If a new userID must be created using the preserved email address, all shared content must be deleted first, or the user will not be allowed to be created (due to a duplicate email address in the system).
One last challenge appears:
- Select Delete User Information if you are certain
  
  Else, select Cancel
A success message is delivered, indicating the userID is deleted from the database.
- No regrets... select OK