npm install Error rollbackFailedOptional

Question

When I try npm install new packages it shows me this error      rollbackFailedOptional  verb npm-session 585aaecfe5f9a82   node --version 8 4 0  npm --version 5 3 0

User · Answer

I tried following options to fix this issue and it worked.

Uninstall Node.js version 8.
Install Node.js version 6.11.4
Use the registry option along with command to install any package.

For example to install express I used following command.

npm install express --registry http://registry.npmjs.org/

or

npm install express -g --registry http://registry.npmjs.org/

If you want to install locally in any specific folder then use below command. Below command will install express on path C:\Sample\Example1 .

C:\Sample1\Example1> npm install /Sample/Example1 express --registry http://registry.npmjs.org/

Note: If you are installing locally in a specific location then first go to that directory using command and then run above command. If you are not inside that directory and giving only path in command that will not work.

If you get package.json missing error then run below command before installing package locally

C:\Sample\Example1> npm init

above command will create package.json file. No need to provide any data. just hit enter.

Note: If you are behind a firewall then you may need to set a proxy.

User · Answer

In my case I had to edit the  npmrc directly and add the proxy settings manually  proxy http   yourorganizationproxy com 8080 https-proxy http   yourorganizationproxy com 8080  Hope this helps someone

User · Answer

In some rarer occasions  check that the project can be built using regular npm commands  I ran into one that is configured to work with bower  so bower install  lt github url gt  works while npm install  lt github url gt  gives that unhelpful cryptic error message on all platforms

User · Answer

Make sure you can access the corporate repository you configured in npm is available Check you VPN connection   Else reset it back to default repository like below   npm config set registry http   registry npmjs org    Good Luck

User · Answer

If you have access to the registry but the error is still occurred nothing mentioned above wouldn t work  I noted that this problem is only applicable for local project s installation  i e  if you use -g to global install everything is working fine    What s resolved the problem for me  just remove an entry regarding a package you re going to install from a project s package json file  After that next call to npm will work and install the package successfully

User · Answer

I had the same issue  But it can run properly with switching from company s internal network to visitor network

User · Answer

While installing the Angular Command line tool  CLI   If you are getting Rollback Error then it may be occurring due to your network is connected with your Client Network or your Company Network where you are working on   So Please try to install CLI in your public network  or Your Mobile s hotspot Network  then you would definitely get CLI installed

User · Answer

Struggled with this issue for some time before figuring it out   I m using High Sierra  10 13 6   Uninstalled and re-installed node and nvm multiple times - using the installer pkg  HomeBrew  and then using the command line  IMO  the command line works the best   I followed these steps   1  Ran npm config ls -l  2  Checked that the value for globalconfig was   lt installpath gt   nvm versions node v12 16 3 etc npmrc But when I tried to get to this path in the Terminal  it gave me No such file or directory  So I   3  created the folder etc  created the npmrc file and added this line in it    registry    https   registry npmjs org      I do not have the    npmrc file in my  HOME  Then   4  I re-ran the npm install command    Note that this still threw the rollbackFailedOptional  verb npm-session error  but this time it completed  though with a different error  You could try these steps and see if it works   For those who are curious  it threw a Response timeout while trying to fetch https   registry npmjs org  lt package gt   over 30000ms  error  so I added the timeout    60000  to the  etc npmrc file  as found on another Stackoverflow thread   and tried again  This worked for me    Hope this helps

User · Answer

Mine was due to McAfee firewall  It is set to Ask mode  so should have popped up a prompt to ask for internet connection  but it didn t  Going into McAfee and  temporarily   disabling the firewall allowed me to install

User · Answer

I ve already had the proxies set as described above and it was working until today  Then it turned out that now I need  http     in front of my proxy address   http    proxyURL   proxyPort    Then it finally worked

User · Answer

use sudo before your command as    sudo npm install

User · Answer

Try this  npm config rm proxy npm config rm https-proxy

User · Answer

try this   delete all file in folder    APPDATA  npm-cache  locks

User · Answer

The following commands resolved my issue   npm config set proxy http   yourproxyurl com 8080   you need to enter your or your company proxy URL and 8080 should be replaced by your proxy port   npm config set https-proxy http   yourproxyurl com 8080

User · Answer

Try this all command answered here to solve the problem https   stackoverflow com a 54173142 12142401 if problem persists  Do the following Steps     Completely Uninstall the nodejs  checkout this answer for complete uninstallation of nodejs https   stackoverflow com a 20711410 12142401      Download the updated nodejs setup from their website   Install it in any drive but not on previously installed drive  like if you installed in C drive then install in D S G Drive    Run your npm command it will completely work fine

User · Answer

Seem this bug is not fixed yet  1   Some people get worked  some people not  I also get not worked   I tried clear cache with command  npm cache verify then run install command again  I got worked    1   https   github com npm npm issues 17246

User · Answer

Most likely to be npm registry cannot be reached by npm  Check npm proxy configuration  I had exactly the same issue on Windows Server 2008 R2  I suspected Internet Explorer s Enhanced Security Configuration at first but after turning that off with no success the issue turned out to be that npm was not configured to use my corporate proxy connection to the internet    It turns out that npm does not use the proxy settings in effect via Internet Options   Connections tab   LAN settings where the server is set to  Automatically detect settings   Being set to automatically detect settings does not guarantee that a proxy is indeed being used  it just means that Windows will automatically configure proxy settings for Internet Explorer if it finds a special wpad dat  file at http   wpad  yourdomain com  wpad dat    You can test whether a wpad dat file is in use in your organisation by typing the following into a web browser   http   wpad  yourcompany domain  wpad dat   If no file is available then it is likely you are not using an organization-wide proxy  If one does get returned to the browser then     Toward the bottom of this file  you should see a line saying   PROXY  lt host port gt     It might be repeated if you have multiple proxies available  The host and port are needed in order to tell npm to use the proxy settings like so   npm config set proxy http    host   port    and  npm config set https-proxy http    host   port    For example if your proxy is at my proxy com on port 8080 then the npm commands would be   npm config set proxy http   my proxy com 8080 npm config set https-proxy http   my proxy com 8080   Once I had told npm which proxy to use all started working in I was able to run the install commands without a problem   Thanks to the following post for help with the wpad file discovery

User · Answer

first this      gt  npm config rm proxy      gt  npm config rm https-proxy        then this      gt  npm config set registry https   registry npmjs org   solved my problem  Again  Be sure to check whether you have internet connected properly

User · Answer

For Windows  Run the installer again and choose to  Repair  the installation  Worked for me

User · Answer

Solution  The default value of    proxy    and    https-proxy    key of npm config is NULL  After doing some more R  amp  D then I tried to set the proxy setting value to above key  this solution works in my scenario    Also  the same proxy settings need to be applied in IE browser Internet Settings    Settings    LAN settings   Conclusion  In corporate some environment the proxy is a somewhat mandatory setting otherwise npm install will not work   Issue on GitHub  https   github com SharePoint sp-dev-docs issues 3266  You can refer blog for detailed information  https   blogs2share blogspot com 2019 01 spfx-environment-setup-error html

User · Answer

I had the same effect creating a react app with PhpStorm  And then at the end it just says done  Running the same command in the terminal gave me detailed errors  The project folder I ve created was named react which seems to be a no-go   Make sure your project folder is not named react

User · Answer

I set two system environment variables -   HTTP PROXY    lt  proxy url   HTTPS PROXY    lt  proxy url     This actually worked for me

User · Answer

Try this  It worked fine for me      npm install  your floder location package name --registry   http   registry npmjs org    Below is the exact command for me for installing vue-router package in my laravel project  my project name vue laravel      aslam004 vue laravel   npm install    var www html projects vue laravel vue-router --registry http   registry npmjs org    Good luck

User · Answer

The cause for this might be your current NPM registry  Try to check for a  npmrc file  These can be at various locations    per-project config file   path to my project  npmrc  per-user config file     npmrc  global config file   PREFIX etc npmrc  npm builtin config file   path to npm npmrc    Within these there can be something like  registry https   mycustomregistry example org   which will take priority over the default one  http   registry npmjs org    You can delete this line in the file or use the default registry like that   npm  lt command gt  --registry http   registry npmjs org

User · Answer

Hi I m also new to react and I also faced this problem after so many trouble I found solution  Just run in your command prompt or terminal     npm config set registry http   registry npmjs org   This will resolve your problem   Reference link  http   blog csdn net zhalcie2011 article details 78726679

User · Answer

You can resolve the issue by looking if your network has any proxies  that is prohibiting the download process  My company s network had a firewall enabled  which was causing the issue for me  So I had to switch to an un-secure network  probably a hotspot from your mobile network   and that worked for me

[node.js] npm install Error: rollbackFailedOptional

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