Blocked installs
Find out why a package is unavailable.
Investigate
Use scrutyn why npm example-package@1.2.3 or scrutyn why pypi example-package@1.2.3. The response explains the decision and may suggest an alternative. scrutyn doctor checks local configuration without changing files.
A version can be missing, in Lazaretto, awaiting a scan, blocked by policy, or removed upstream. Do not copy a credential into a project file to work around a 401. See troubleshooting.