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Intellisense is a very useful feature of VSCode or any IDE. It makes coding more convenient. It provides quick info tooltips, error squiggles (linting), autocomplete for namespace/class/struct members, parameter help, member functions IntelliSense, statement completion, and member list, code colorization and fonts, and so on.
However, Intellisense will occasionally display "Scanner" and continue to load, which is unexpected behavior and does not display any help for the definition for all of the above features.
Table of Contents
Here are the general solution you have to apply for fixing the IntelliSense issue with visual studio code.
1 Use Keyboard Help
When VSCode does not show any IntelliSense support, you can trigger Intellisense by typing Ctrl + Space or the dot character (.) which may show IntelliSense.
2 Check Settings.json is changed
If any of these keys are present in your settings.json and are off or false then turn it ON if off and true if false.
{
"editor.acceptSuggestionOnCommitCharacter": true,
"editor.acceptSuggestionOnEnter": "on",
"editor.suggestOnTriggerCharacters": true,
"editor.suggest.localityBonus": true,
"editor.wordBasedSuggestions": true,
"editor.parameterHints.enabled": true,
}
3 Restart VSCode
If the IntelliSense suddenly stops working, restart VSCode and the problem should be resolved.I can't promise this will solve your problem, but why not give it a try?
4 Update VSCode
VSCode may be buggy at times, but those bugs may be resolved when you update VSCode.
5 Select Correct programming Language Mode
Intellisense is available in Visual Studio Code for Javascript, TypeScript, JSON, HTML, CSS, SCSS, and Less, among other languages.You can configure richer IntelliSense for C/C++, Python, C#, and Ruby by installing language extensions.
For Example: If you are writing a programming language in Python and the Python language extension is not installed and active in vscode then IntelliSense for Python will not function.
Let's look at various Language extensions for different programming languages.
- Install Intellisense Python Language: Click Here
- Install Intellisense C/C++ :Click Here
- Install Intellisense for C#: Click Here
- Install Intellisense for Go: Click Here
- Install Intellisense for Dart: Click Here
- Install Intellisense for Ruby: Click Here
- Install Intellisense for Angular: Click Here.
You can do this by pressing the Cmd/Ctrl + Shift + P keyboard combination to open the Command Palette, then selecting Change Language Mode, then selecting the appropriate Language. If you want Python then select Python from the list.
6 Updates Old Language Extension
If your programming language extension is old and still providing updates, simply updating them may solve the problem. You can reinstall the extension as well and have a look.
7 Reload the Extension
If you have edited the extension, you can reload it. Here are the steps:
- Open the command palette (Cmd/Ctrl + Shift + P)
- Type "Reload Window" and Select "Reload Window" from the list.
This will reload your vscode.
8 Reinstalling VSCode
Sometimes reinstalling Visual Studio Code might resolve the problem.
Also Read: Insert Vertical Line in VsCode
Problem with C# Language
If you have tried everything mentioned above and nothing works for you then just try the below steps as well.
After installing the extension, open the Command Palette by pressing Cmd/Ctrl + Shift + P, then type OmniSharp: Select Project and select the appropriate workspace.
Also, let's enable C# formatting in VSCode Settings if it is disabled. Here are the steps:
- Go to Settings >Extensions >Select C# Configuration
- Then, if not already checked, check the Enable button. After that, restart vs code.
Also Read: How to Disable VS Code Auto Updates?
Problem with Typescript Language
If you have tried everything mentioned in the above 8 points and nothing works for you then just try the below steps as well.
In Angular, if parameter hints are not appearing in some cases, you must enable them if they have been disabled for some reason.
In the settings.json file, if you have the "editor.parameterHints.enabled:false" inside ["typescript"] then just it to true as below.
"[typescript]":{
"editor.parameterHints.enabled":true,
}
Also, give this a try:
Go to extensions and search for @builtin typescript and javascript and right-click on "TypeScript and JavaScript Language Features"
and select "Enable" if it is disabled.
Problem with Python Language
Maybe due to python modules being located in a non-standard location if so then you have to include this location for autocompletion in the settings.json file.
Also, Python executable path may be incorrect just check it configure the path to python executable as shown below.
{
"python.pythonPath": "/usr/bin/python",
"python.autoComplete.extraPaths": [
"${workspaceFolder}/customModule"
]
}
Also, try this if you have selected the wrong Python Interpreter:
Press Ctrl / CMD + Shift + P > Python Select Interpreter > Choose the one with package you look for.
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