Installer error
How to fix Error when installing ng add @ng-bootstrap/ng-bootstrap
Quick summary
- Seen in 16 public reports
- Most common platform: unknown
- Last updated: May 5, 2026
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Guide comparison
Previous
LLM generated
"This issue has been reported in 7 cases. Users experience problems such as: Error when installing ng add @ng-bootstrap\/ng-bootstrap."
You see an error while trying to install ng add @ng-bootstrap/ng-bootstrap. This usually means the installer could not finish adding the library to your project.
Try the safest, simplest checks first before changing anything.
- Outdated app or system version
- Corrupted cache or data
- Configuration conflicts
- Command run outside an Angular project folder
- Missing or incomplete angular.json or package.json
- Project not created with a supported Angular setup
- Uninstall the existing app version
- Clear package installer cache
- Download a compatible version
- Reinstall the app
- Open your terminal and go to the folder that contains your Angular project.
- Check that package.json and angular.json exist in that folder.
- Run your project’s build command to confirm it builds without errors.
- If the build passes, try the install command again in the same folder.
- If it still fails, create a new Angular project in a different folder and try the install there.
No original warnings are available.
- Do not delete or modify package.json or angular.json unless you know what they do.
- Avoid running install commands as administrator unless your environment requires it.
Enriched long-form guide
The command you ran tries to add ng-bootstrap to an Angular project. If it fails, the most common reasons are that the project is not recognized as an Angular workspace, required files are missing, or the tools you are using are not set up the way the installer expects.
This usually happens when you run the command outside an Angular project folder, when the project was created with a different setup, or when key files like package.json or angular.json are missing or incomplete. It can also happen if the command is run in the wrong folder or if the project is in a state that the installer cannot read.
In plain terms, the installer needs a valid Angular project with the right files in place. If those files are missing, damaged, or not where it expects, it will stop and show an error instead of adding the library.
Start with the safest checks: make sure you are inside your project folder and that package.json and angular.json exist. Then confirm your project builds before trying the install again. If it still fails, check that your project was created with a supported Angular setup and that you are using the same folder where your source code lives.
If those checks look good, try creating a fresh Angular project in a new folder and run the install there. This helps you see whether the problem is with the project itself or with your environment, without risking changes to your main work.
Evidence
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github · score 96
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