Can't install express because npm install express error - express

Question

I'm receiving the following errors when trying to install express:
npm ERR! code ERR_OSSL_PEM_NO_START_LINE
npm ERR! errno ERR_OSSL_PEM_NO_START_LINE
npm ERR! request to https://registry.npmjs.org/express failed, reason: error:0909006C:PEM routines:get_name:no start line

Answer 1

I also had a problem like that... and looking around for various solutions on the internet I tried a few of these:
Try npm install to another repository
Try install another version of node.js
npm set registry http://registry.npmjs.org/
If the above method still fails. You can try these:
Uninstall nodejs from Programs & Features with the uninstaller.
Delete these files:
C:\Program Files (x86)\Nodejs
C:\Program Files\Nodejs
C:\Users\{User}\AppData\Roaming\npm
C:\Users\{User}\AppData\Roaming\npm-cache
C:\Users\{User}\.npmrc (and possibly check for that without the . prefix too)
Reboot, for good measure
Try too install node.js again
Try too nmp install to destination repository
Good luck... with what I mentioned above, I was able to solve the problem with my setup.

Answer 2

I experienced this issue and based on the error message, I noticed the certificate (.crt) and the private key (.pem) files I have in the ssl folder needed to have this lines before the start and at the end of the key contents:
-----BEGIN RSA PRIVATE KEY-----
Your key contents go here for .pem file
-----END RSA PRIVATE KEY-----
The same is required for the certificate file and missing either generates the same error:
-----BEGIN CERTIFICATE-----
Your certificate contents go here for .crt file
-----END CERTIFICATE-----

Answer 3

Do the following :
Delete the following mention
npm cache clean -f
C:\User\user\appdata\roaming\npm-cache
C:\User\user\appdata\roaming\npm
C:\User\user\appdata\Local\Temp
C:\programefile\nodejs
delete node version manager (nvm) is their
type where node on cmd if it shows node js path means node js is properly not uninstalled
delete node js and npm path from environment variable
go to this much address C:\User\user them right click on empty space and go to property and tick on hidden in order to get .npmrc file and delete all reated to it
delete other version of node js if installed
after doing this much restart your pc and then install new latest recommended version of node js. After installed the node js run node -v to check version you installed and npm -v for npm version

Answer 4

Type this command
npm set registry http://registry.npmjs.org/
and after that try again
npm install express
as per this issue it is a certificate related problem

Answer 5

This process worked for me:
Setting the registry with: npm set registry http://registry.npmjs.org/
Retrying the install with npm install express

Answer 6

Type this commands:
npm set registry http://registry.npmjs.org/
and after that try again
npx create-react-app app_name
it's work for me