No default toolchain configured after installing rustup

Question

I installed Rust using rustup, but when I try to enter a Rust command like cargo or rustc in my console, the following error appears:

error: no default toolchain configured

Is this a known issue?

Well, you've answered your own question. Install a toolchain (preferably default). The strange part of this is that it wasn't installed by default. — E_net4, Jun 01 '17 at 10:14
Yeah, as you mentionne, rustup-init.exe isn't suppose to install a default toolchain ? I can't even uninstall with "rustup self uninstall" command, the same error appear... — Darkaird, Jun 01 '17 at 10:21
Can you update your question with everything that you have tried so far? — E_net4, Jun 01 '17 at 10:23
I have @Darkaird's experience, and I agree "The strange part of this is that it wasn't installed by default" -- my installation configuration (before running) says: `default toolchain: stable (default)` and after running, the message says: `info: default toolchain set to 'stable-x86_64-pc-windows-msvc' stable-x86_64-pc-windows-msvc installed - rustc 1.66.0 (69f9c33d7 2022-12-12)` weird... — Nate Anderson, Jan 08 '23 at 01:11
In my case I was using Windows installer; when changed the value of `RUSTUP_HOME` and `CARGO_HOME` to the `C:\` directory directly: `set "RUSTUP_HOME=C:\.rustup" & set "CARGO_HOME=C:\.cargo"` , I got this error. When I uninstalled and let the default values: `%USERPROFILE%\.cargo` and `%USERPROFILE%\.rustup`, I didn't get this error anymore. That's OK, I guess plenty of other directories are installed at `%USERPROFILE%`, like `.matplotlib`, `.gem`, `.ipynb` , `.ssh` — Nate Anderson, Jan 08 '23 at 01:17

score 334 · Accepted Answer · edited Oct 21 '17 at 15:26

334

If it seems that rustup did not successfully install and configure the stable toolchain, you can do it manually:

rustup install stable
rustup default stable

After testing, it seems like my incomplete installation may have been caused by a network error. You can also try to reinstall to solve the problem.

edited Oct 21 '17 at 15:26

Shepmaster

answered Oct 21 '17 at 14:29

BlackGlory

1

I had a network error while installing rust -- my wi-fi connection dropped -- and had this same error message. Running these commands fixed it. – bgvaughan Nov 10 '19 at 04:37
4

I installed rustup using yay, and it didn't run these commands it seems! – Shubham Sharma Jun 29 '20 at 03:25
If you installed using yay please try the git version, mine worked. @ShubhamSharma – Hayyaun Aug 23 '23 at 02:49

score 8 · Answer 2 · edited Jun 01 '17 at 13:25

8

The problem is due to my connection and my proxy which didn't allow rustc, cargo, and others to be downloaded.

I thought that the all the executables were all-in-one but apparently not.

edited Jun 01 '17 at 13:25

Shepmaster

answered Jun 01 '17 at 12:13

Darkaird

4

I am 99.9999999999999999999999999999999999999999999% certain that no proxies are even involved in my setup, and I still get the same errors. – Szczepan Hołyszewski Aug 26 '17 at 20:44
I didn't say that this is THE solution for the problem but it may be one. – Darkaird Aug 28 '17 at 07:10
I use cntlm to get past my company's proxy. – Cthutu May 16 '18 at 20:51

score 4 · Answer 3 · edited Aug 07 '18 at 12:22

4

In my case, I had multirust installed and the following worked for me:

multirust install stable
multirust default stable

edited Aug 07 '18 at 12:22

anothernode

answered Aug 07 '18 at 12:03

FroiD

score 4 · Answer 4 · edited May 24 '22 at 12:05

4

I installed rust with root, but my IDE doesn't run as root, so I installed rust without root, all worked well.

edited May 24 '22 at 12:05

Kaki

answered Dec 27 '19 at 03:31

wangsir

4 Answers4