Angular default app ng serve: privacy error in Chrome: NET::ERR_CERT_AUTHORITY_INVALID

Question

I'm trying to follow this guide https://angular.io/guide/setup-local. I installed node.js and angular cli and build default app:

ng new my-app

Now i want to start app:

cd my-app
ng serve --open

It starts ok:

** Angular Live Development Server is listening on localhost:4200, open your browser on https://localhost:4200/ **
i ｢wdm｣: Compiled successfully.

But when i open page in Chrome it is privacy error

When i tried to open it in Firefox it all work great. I tried to start app with next command:

 ng serve --open --ssl true

Still the same error. Any help? At this point i don't need https, i just want to be able to open my app in Chrome.

+

I posted wrong error code. I get this: ERR_SSL_PROTOCOL_ERROR

It looks like you are trying to open your website using SSL protocol (by using `https://` or port `:443`. Could you give us the URL you are using to access to your application ? — Martin Paucot, Dec 16 '19 at 08:22
why do you try to use --ssl option? is it required for something? just skip it. for local development usually just http is enough — Andrei, Dec 16 '19 at 08:29
This worked for me! https://stackoverflow.com/a/71604341/2093371 — hestellezg, Feb 23 '23 at 22:29

score 26 · Accepted Answer · answered Dec 16 '19 at 08:16

26

open chrome://flags/#allow-insecure-localhost, enable this flag and restart chrome. Chrome will then ignore wrong certificates for localhost

answered Dec 16 '19 at 08:16

Andrei

5

It worked! Thank you! Need to use SSL, though: `ng serve --open --ssl true` – Kngh2 Dec 16 '19 at 08:28
As mentioned [here](https://stackoverflow.com/a/48767886/998605), you can also go directly to the SSL endpoint in Chrome and click **Proceed** under the Advance button. This procedure solved the issue of NET::ERR_CERT_DATE_INVALID for me. – Abdur Rahman Oct 03 '21 at 13:05

score -1 · Answer 2 · answered Dec 16 '19 at 08:20

-1

You just open http://localhost:4200 but not https://.

answered Dec 16 '19 at 08:20

SuperStar518

You can force `https` when you click **Advanced** button. Tick the option and continue to access `https://localhost:4200`. – SuperStar518 Dec 16 '19 at 08:30
http redirects me to https – Enrico Jan 26 '22 at 07:36

2 Answers2