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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / The current AL extensi...
Small and medium business | Business Central, N...
Answered

The current AL extension package can only debug Dynamics 365 BC servers with a version >= to v20.

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Posted on by Nick Webb 907
I'm attempting to use 'AL: Publish with debugging' and it's failing with the error below:
 
The current AL extension package can only debug Dynamics 365 Business Central servers with a version greater than, or equal to version 20.
Please use a previous AL extension package to debug a server with version: '3.0'.
 
I'm using VS Code with a BC version 14 Docker container, downloaded using a powershell script created by new-BcContainerWizard (version details below):
 
Version: Platform 14.0.29530.0 + Application 29537 (GB Dynamics NAV 14.0)
Azure AD tenant: common, Environment: Production
 
'AL: Publish without debugging' works fine. Any idea where I'm going wrong?
Categories:
Dynamics 365 Business Central
I have the same question (1)
  • Suggested answer
    Gerardo Rentería García Profile Picture
    Gerardo Rentería Ga... 25,555 Most Valuable Professional on at
    Hi
    With version 13 of AL, we have this change.

    Support ended for debugging Business Central server versions less than 20

    Business Central server versions released before the April 2022 release (version 20) cannot be debugged with AL extension package versions that are greater than or equal to version 13.

     
    You can change the runtime in the json.
     
    Or you can always temporarily install an older AL version like 12.7
     
    BR
    GR
  • Nick Webb Profile Picture
    Nick Webb 907 on at
    Is it possible to have 2 separate installations of VS Code on one system, one with a fixed, old version of the AL language extension and one with the latest? Has anyone provided a guide for setting up such a development environment?
  • Verified answer
    YUN ZHU Profile Picture
    YUN ZHU 99,090 Super User 2026 Season 1 on at
    Generally this is not possible. AL Language needs to be reinstalled each time.
    But you can try methods other than VS Code, such as Cursor. You can install AL Language different from VS Code in it.
     
    Hope this helps.
    Thanks.
    ZHU
     

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