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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / "Communication pr...
Small and medium business | Business Central, N...
Suggested Answer

"Communication protocol mismatch" Error.

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Posted on by Dynamics Business C... 50

Hi Experts,

I followed this Blog to change the credential type to NavUserPassword

https://www.sauravdhyani.com/2020/07/msdyn365bc-modern-client-with.html?lr=1

but after completing all the steps mentioned, I'm getting the following error in web client. Please help me to resolve the issue.0741.error.png

I have the same question (0)
  • Suggested answer
    DAnny3211 Profile Picture
    DAnny3211 11,421 Super User 2026 Season 1 on at

    hello

    look in the folder search %AppData% (this is for Dynamics NAV 18 , but it is the same for BC on-prem)

    open CLientusersettings.config

    pastedimage1668066827434v1.png

    and change the following parameter as on the service:

    pastedimage1668066954386v2.png

    AS iS:

    <add key="ClientServicesCredentialType" value="Windows" />

    TO be:

    <add key="ClientServicesCredentialType" value="NavUserPassword" />

    check my answer if it helped you, thanks

    DANIELE

  • Dynamics Business Central Profile Picture
    Dynamics Business C... 50 on at

    hello Daniele ,

    thanks for early replay, I got to know for Navision but I'm asking for Business central on-Prem, so can I know where the ClientUserSettings.config file is present for BC

    I have changed in the ClientServicesCredentialType to NavUserPassword whiich is there in  "C:\inetpub\wwwroot\<ServerInstance>\navsettings.json".

  • Suggested answer
    Amit Profile Picture
    Amit 2,563 on at

    Hi,

    Refer the below link

    https://erpconsultors.com/business-central-d365-installation/

    Regards

    Amit Sharma

    www.erpconsultors.com

  • RahulBansode Profile Picture
    RahulBansode 171 on at

    Could be a caching issue, try it in incognito mode.

  • CLOUDEAGLE Profile Picture
    CLOUDEAGLE 12 on at

    Have you found the solution ?

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