Microsoft security update may cause downtime


We would like to inform all customers that a Microsoft security update may cause incompatibility and downtime of services.

Affected could be customers who have at least either 

  • one MFP or printer
  • one production printing device or
  • a software application from Konica Minolta in use. 

In March 2020, Microsoft is going to publish this security update.  

Affected customers can either configure the Konica Minolta device themselves (further information see below) or get in touch with their local Konica Minolta contact who can provide support as an additional service.


Instructions for own configuration:
If you want to ensure a smooth transition, please do not install the software security update prior compatibility confirmation. Why not? By installing the software security update, LDAP channel binding and LDAP signing will be enabled by default, which may affect compatibility of Konica Minolta MFPs or printers, production printing devices and software applications, if configured for connecting to a Microsoft Active Directory server by using the LDAP protocol. As a result, LDAP connections, for example, a user authentication request initiated on an MFP, may be refused. Hence, users cannot log in to their devices or application anymore causing service unavailability.

For device configuration by yourself you can do the following:

  1. Choose LDAPS (LDAP over SSL/TLS) and simple authentication method for Supported External Server Authentication configuration after applying the security update
  2. Choose LDAPS (LDAP over SSL/TLS) and GSSPNEGO authentication method for Supported LDAP (LDAP-IC / Simple print authentication / LDAP Address search)  configuration after applying the security update

Further information can be obtained from the manual instructions of your Konica Minolta device.

For Konica Minolta software application, please contact your local Konica Minolta contact for detailed instructions.


If you rather want to use Konica Minolta support in this, please get in touch with your local Konica Minolta contact. Our service team offers a service to update MFP and application configuration, which can be used prior applying the Microsoft security update and ensure that you have a smooth transition without any downtime which might imperil your daily business work.
Please note that the required configuration changes are not related to a malfunction or failure of our products but are triggered by a change of the Microsoft Active Directory server environment. 

For further information about LDAP channel binding and LDAP signing, please refer to the following Microsoft documents