[Bug]: TypeError: Cannot read properties of undefined (reading 'call') When starting mssql extension v1.37 (v1.36 still works)

[EricZiola]

Description

Expected VS Code mssql extension to work on MacOs ARM64 M1 Pro laptop like it always has.

When the new version of mssql extension v1.37 was updated and restarted in VS Code the extension failed to initialize with the output window logging:

Initializing SQL tools service for the mssql extension.
Note: mssql commands will be available after installing the service.

Platform: darwin, arm64 (OSX)

Installing SQL tools service to /Users/eziola/.vscode/extensions/ms-mssql.mssql-1.22.1/sqltoolsservice/4.10.2.1/OSX.
Downloading https://github.com/Microsoft/sqltoolsservice/releases/download/4.10.2.1/microsoft.sqltools.servicelayer-osx-arm64-net7.0.tar.gz
[ERROR] TypeError: Cannot read properties of undefined (reading 'call')

Steps to Reproduce

Install mssql extension v1.37 on MacOS ARM64 M1 Laptop
Try to connect to a SQL Database (Azure SQL DB in my case).
Get error message above
Uninstalled, reinstalled v1.36
Restarted Extensions
Worked!

Affected Area

• Connection dialog (SQL Server | Azure browse/Fabric browse)
• Query editor
• Query results panel
• Object Explorer
• GitHub Copilot integration
• Preview/Edit data
• Table Designer
• Schema Designer
• Schema Compare
• Local SQL Server Container provisioning
• SQL database in Fabric provisioning
• DACPAC/BACPAC export/import
• SQL Database projects
• Query Plan Visualizer
• Other (please describe below)

If you selected "Other", please describe the affected area

The extension fails to initialize with the error stated above.

Environment Information

VS Code: v1.106.1
mssql: v1.37
MacOs ARM64 M1 Macbook Pro
Connection to: Azure SQL Server

Confirmation

• I have searched existing issues and couldn't find a match
• I want to work on this issue

[kburtram]

@EricZiola The console log is showing ms-mssql.mssql-1.22.1, which references a pretty old (unsupported) version of STS. The 1.37.0 release should have downloaded the current STS into the 1.37.0 directory.
Can you ensure that you've uninstalled any old versions of the MSSQL extension from this environment prior to installing the latest version? You may check /Users/eziola/.vscode/extensions and manually delete any old MSSQL extension versions there if you can't remove them from the Extension Manager.

[EricZiola]

Yes. I can confirm that I've uninstalled all versions of mssql extension, then I close out of VS Code. Re-open VS Code, install the new v1.37 version and get the following output when trying to use the extension:
[7:53:13 PM] [SQL Tools Service] Initializing SQL tools service for the mssql extension.
[7:53:13 PM] [SQL Tools Service] Note: mssql commands will be available after installing the service.
[7:53:13 PM] [SQL Tools Service]
[7:53:13 PM] [SQL Tools Service] Platform: darwin, arm64 (OSX)
[7:53:13 PM] [SQL Tools Service]
[7:53:13 PM] [SQL Tools Service] Installing SQL tools service to /Users/eziola/.vscode/extensions/ms-mssql.mssql-1.37.0/sqltoolsservice/5.0.20251117.1/OSX.
[7:53:13 PM] [SQL Tools Service] Downloading https://github.com/Microsoft/sqltoolsservice/releases/download/5.0.20251117.1/microsoft.sqltools.servicelayer-osx-arm64-net8.0.tar.gz
[7:53:13 PM] [SQL Tools Service] [ERROR] TypeError: Cannot read properties of undefined (reading 'call')

Then when I uninstall v1.37 and close out, reopen, install v1.36, it works fine and this is the output I get:
[7:58:13 PM] [SQL Tools Service] Initializing SQL tools service for the mssql extension.
[7:58:13 PM] [SQL Tools Service] Note: mssql commands will be available after installing the service.
[7:58:13 PM] [SQL Tools Service]
[7:58:13 PM] [SQL Tools Service] Platform: darwin, arm64 (OSX)
[7:58:13 PM] [SQL Tools Service]
[7:58:13 PM] [SQL Tools Service] Installing SQL tools service to /Users/eziola/.vscode/extensions/ms-mssql.mssql-1.36.0/sqltoolsservice/5.0.20250828.1/OSX.
[7:58:13 PM] [SQL Tools Service] Downloading https://github.com/Microsoft/sqltoolsservice/releases/download/5.0.20250828.1/microsoft.sqltools.servicelayer-osx-arm64-net8.0.tar.gz
[7:58:15 PM] [SQL Tools Service] (79836 KB) .................... Done!
[7:58:17 PM] [SQL Tools Service] Installing ...
[7:58:18 PM] [SQL Tools Service] Done! 881 files unpacked.

Are you able to replicate?

[Benjin]

We haven't been able to reproduce this (testing on an M4 macOS, so should match your same platform).

We'll leave this open as a reminder to improve logging in this area, and to surface a more helpful error message if STS is unable to install/activate properly.