web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

No record found.

News and Announcements icon
Community site session details

Community site session details

Session Id :
Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Business central 20
Small and medium business | Business Central, N...
Suggested Answer

Business central 20

(0) ShareShare
ReportReport
Posted on by luki1997 50

hello 

i have installed business central 19 on premise. when i set the credential type Windows it works fine, when i change the credential type to navuserpassword it says: There is a communication protocol mismatch between the client and the server business central. i want to have the navuserpassword credential type because i have multiple users that login to the webclient of BC 19. 

i had it before the credential type NAVUserPassword and everything was working fine, now its not 

I have the same question (0)
  • Suggested answer
    IB-29041624-0 Profile Picture
    IB-29041624-0 1,187 Moderator on at

    Please make sure you have configured both the server and clients correctly for the authentication type according to this documentation:

    learn.microsoft.com/.../users-credential-types

  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 101,162 Super User 2026 Season 1 on at

    Hi, hope the following helps.

    https://forum.mibuso.com/discussion/56400/there-is-a-communication-protocol-mismatch

    https://archerpoint.com/login-error-communication-protocol-mismatch-between-client-and-server/

    Thanks.

    ZHU

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Introducing the 2026 Season 1 community Super Users

Congratulations to our 2026 Super Stars!

Meet the Microsoft Dynamics 365 Contact Center Champions

We are thrilled to have these Champions in our Community!

Congratulations to the April Top 10 Community Leaders

These are the community rock stars!

Leaderboard > Small and medium business | Business Central, NAV, RMS

#1
OussamaSabbouh Profile Picture

OussamaSabbouh 2,138 Super User 2026 Season 1

#2
YUN ZHU Profile Picture

YUN ZHU 1,279 Super User 2026 Season 1

#3
AndrewThomas81 Profile Picture

AndrewThomas81 1,192

Last 30 days Overall leaderboard

Featured topics

Product updates

Dynamics 365 release plans