Microsoft Windows 10 Pro
Version 1803
Build 17134.285
Worked for me with this:
1. Run secpol.msc from command line.
2. Security Settings -> Local Policies (Lokale Richtlinien) -> Security Options -> Network Security: LAN Manager Authentification (Netzwerksicherheit: LAN Manager-Authentifizierungsebene)
-> switch to: "Send only NTLMv2 answers" ("Nur NTLNv2-Antworten senden").
Same as:
Regedit: HKLM\SYSTEM\CurrentControlSet\Control\Lsa\LmCompatibilityLevel (REG_DWORD): 3
Reference (Ideas 
https://answers.microsoft.com/…9c-4b6a-b24c-72f9f7e92f0a