Install multiple versions of Node.js on Windows without using NVM for Windows

I haven't been able to find any questions/answers regarding how to install two versions of Node.js (such as v10 and v14) on the same computer without using NVM. I can't use windows-nvm because it requires admin privileges, and I'm working on a company laptop as a standard user.

I need to be able to install multiple different versions of Node.js because different projects under the same company use different versions of Node.js as a necessity.

Is the only way to uninstall the installed version and install a new version every time? Is there any way I can have v10 under C:\Program Files\node10, and v14 under C:\Program Files\node14?

To be clear, the admins are willing to grant me specific privileges or install any software needed in order to get this working. We have tried using something called RunAsTool to try to let me run NVM as an admin, but this doesn't work because of its limitations.

Another option would be to grant me admin rights to any files and directories needed for NVM to function, but there is no list of those files/folders that I can find.

A third option would be to simply install two different versions, but when you install a new version, the previous version gets removed, even if it's installed under an unusual path like C:\Program Files\node16.

There's no easy way to do this, I think. Broadly you need two things to get node working on Windows: the nodejs folder with the executable in it, by default c:\Program Files\nodejs, and the path to that to be on the system path before any other node paths.

Unfortunately both writing to c:\Program Files and changing the system path require admin rights.

However, there is a somewhat clunky workaround. The overall idea is to put the nodejs folder somewhere where you have write access, point the system path at it, and it should run. Then you can switch versions without admin rights by replacing the folder. To do this:

• With admin, install the first version you want to use. Copy the c:\Program Files\nodejs folder somewhere where it won't get deleted on a new install: say c:\nodejsbackups\v10\nodejs if it's version 10.
• Install the second version you want to use, and copy the nodejs file to the same place, say c:\nodejsbackups\v14\nodejs.
• Also copy it to a place you will run it from and where you have write access, say c:\nodejs if you have write access on the c: drive, or your user profile somewhere if not.
• Still with admin rights, edit the system Path environment variable (NOT the user path). Find the entry to c:\Program Files\nodejs and remove it. Add an entry for c:\nodejs. Or just edit it.
• I found that to get Visual Studio node apps to work I then had to also uninstall the original node using Control Panel/Programs and Features.

Now fire up a command prompt and do node --version and npm --version and you should see the second version is working.

To switch versions, without admin delete c:\nodejs and then copy the first version to there from c:\nodejsbackups\v10\nodejs. Restart your command prompt, issue the same commands, and you should see the first version is now working.

This seems to work on some very limited testing, but I think you need to test it all works for your use cases. There may be programs like Visual Studio that assume node is at c:\Program Files without using the path. In the end it may be better to beg for admin rights.