Problem
If trying to access a Nexus Repository npm repositories with npm client versions 5.0.0 to 5.0.3, the requests will be blocked with 401 Unauthorized responses. If using an earlier version of npm client, authentication works.
Cause
The npm client versions 5.0.0 to 5.0.3 have a regression where the old basic authentication method is not supported. See the following npm bug:
https://github.com/npm/npm/issues/16528
The problem is not caused by any issue with Nexus Repository.
Solution
Below are possible solutions to the above npm issue:
- upgrade to npm version 5.0.4 or greater
- or downgrade to an npm version earlier than 5.0.0
- and/or run
npm loginand use npm bearer token realm in Nexus Repository 3. - and/or possibly try this client-based manual workaround specifying registry specific auth