Update (2/6/2020): On February 4, 2020 Microsoft changed their guidance for the March 2020 Windows Updates to indicate that the defaults will NOT be changing in that update.
Microsoft will release new patches here properly in the 2nd half of 2020 thru Windows Update, that will disable simple authentication connection to domain controller over LDAP, this is due to security ricks in this method.
The solution is to change the SSO login source from LDAP to LDAPS or using integrated AD authentications.
See this blog from VMware for more informations: VMware blog
This may/will also affect other products, that uses LDAP simple authentication. One of my colleagues in Atea “Jørgen Rosenkvist Pedersen” has blogged about Citrix ADC: http://www.virtual-hawk.com/2019/11/28/citrix-adc-secure-ldap/