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No delegateCommandHandler for vscode.java.resolveMainMethod #1614
i installed java debugger extension but i am getting "No delegateCommandHandler for vscode.java.resolveMainMethod" error and after multiple restarts still no solution.
os:windows
Hi hamzat (@devhamzat), I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.
Possible Solutions
Update your Java extensions to compatible, latest versions:
Ensure Language Support for Java™ by Red Hat and Debugger for Java are both installed and up-to-date. In issue #1342, the fix was to bump Red Hat’s Java extension beyond v0.64.1 to match the debugger version.
Clean & reload the Java language server:
Open Command Palette (⇧⌘P / Ctrl+Shift+P).
Run Java: Clean Java Language Server Workspace and choose Reload and Delete.
Verify your launch.json is targeting a valid mainClass and that your java.home / JAVA_HOME settings point to a supported JDK.
The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!
open the project and trigger command clean java language server workspace and click the reload in the right bottom corner button.
then please share the status, thanks
This issue has been closed automatically because it needs more information and has not had recent activity. Please reach out if you have or find the answers we need so that we can investigate further.
Activity
github-actions commentedon Feb 27, 2026
Hi hamzat (@devhamzat), I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.
Possible Solutions
Update your Java extensions to compatible, latest versions:
Clean & reload the Java language server:
Verify your launch.json is targeting a valid
mainClassand that yourjava.home/JAVA_HOMEsettings point to a supported JDK.Duplicate Issue
Other references with low confidence
No delegateCommandHandler for vscode.java.resolveMainMethod #1308 – No delegateCommandHandler for vscode.java.resolveMainMethod
Same symptom on Windows 11, but no resolution provided.
No delegateCommandHandler for vscode.java.resolveMainMethod #1308
Failed to run command #969 – Failed to run command (‘vscode_delegate_cmd*’)
A similar delegateCommandHandler error when organizing imports.
Failed to run command #969
The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!
wenytang-ms commentedon Mar 2, 2026
hamzat (@devhamzat)
can you please
openjdkprocess in your osclean java language server workspaceand click the reload in the right bottom corner button.then please share the status, thanks
github-actions commentedon Apr 14, 2026
This issue has been closed automatically because it needs more information and has not had recent activity. Please reach out if you have or find the answers we need so that we can investigate further.