What would cause the following edaprint warning message and how to fix this?

 'warning message:10/21/2021 13:09:32.143 W dfm scan failed, postponed for 1 second.'  

How to fix 'W dfm scan failed, postponed for 1 second' error message?

All

Resolution : 
The ID being used to scan for scheduled and deffered jobs is user server admin id  : OPSYS\wf_admin

The scan ID requires a password to work, and looking at your admin.cfg this ID is stored without a password

For example :
ùËÃËadmin_id = OPSYS\IADMIN
BEGIN
  admin_level = SRV
END
admin_id = OPSYS\RJK
BEGIN
  admin_level = SRV
END

Here are two options to add the password for this ID, which will work if the password is non-expiring. 

The other option is to configure PTH as a secondary provider, and use admin_id = PTH\wf_admin as the effective Server admin under access control settings. 

The warning message only appeared because the password was missing, as this requirement has been present since the beginning. It didn't cause performance or any other type of issues.