Some Ubuntu- or Debian-derived distributions such as Linux Mint may not return the correct version name from `lsb_release`. This value is used in the install process to determine the package to install. If you know the code name of the Ubuntu or Debian version your distribution is derived from, you can set the `AZ_REPO` value manually when [adding the repository](https://learn.microsoft.com/cli/azure/install-azure-cli-linux?pivots=apt#lsb_release-doesnt-return-the-correct-base-distribution-version). Otherwise, look up information for your distribution on how to determine the base distribution code name and set `AZ_REPO` to the correct value.
Sometimes it may be a while after a distribution is released before there's an Azure CLI package available for it. The Azure CLI is designed to be resilient with regards to future versions of dependencies and rely on as few of them as possible. If there's no package available for your base distribution, try a package for an earlier distribution.
To do this, set the value of `AZ_REPO` manually when [adding the repository](https://learn.microsoft.com/cli/azure/install-azure-cli-linux?pivots=apt#no-package-for-your-distribution). For Ubuntu distributions use the `bionic` repository, and for Debian distributions
If you can, please upgrade your system to a version with official support for `python3` package. Otherwise, you need to first install a `python3` package, either [build from source](https://github.com/linux-on-ibm-z/docs/wiki/Building-Python-3.6.x) or install through some [additional repo](https://developers.redhat.com/blog/install-python3-rhel). Then you can download the package and install it without dependency.
On SLES 12, the default `python3` package is 3.4 and not supported by Azure CLI. You can first build a higher version `python3` from source. Then you can download the Azure CLI package and install it without dependency.
The Homebrew formula of Azure CLI installs a completion file named `az` in the Homebrew-managed completions directory (default location is `/usr/local/etc/bash_completion.d/`). To enable completion, please follow Homebrew's instructions [here](https://docs.brew.sh/Shell-Completion).
The error message from pip usually means a very old version of pip is installed.
Run `pip --version` to confirm. [Latest pip version](https://pip.pypa.io/en/stable/news/)
Upgrade `pip` with ``$ pip install --upgrade pip`` or install with the ``--pre`` flag.
See [#1308](https://github.com/Azure/azure-cli/issues/1308#issuecomment-260413613)
'X509' object has no attribute '_x509'
--------------------------------------
If you run into an ``AttributeError: 'X509' object has no attribute '_x509'`` error, downgrade your version of the requests library from 2.12.1 to 2.11.1.
See [#1360](https://github.com/Azure/azure-cli/issues/1360)
Windows - 'FileNotFoundError' error on install
----------------------------------------------
Verify that the file path quoted in the error has more than 260 characters.
If so, the installation files exceed the 260 character limit for file paths on Windows.
This can be resolved by installing the CLI in a higher directory to prevent reaching the Windows max filepath length.
See [#1221](https://github.com/Azure/azure-cli/issues/1221#issuecomment-258290204)
Ubuntu 12.04 LTS - Known warning
--------------------------------
You may see the following warning message during install and execution of `az`.
```
/usr/local/az/envs/default/local/lib/python2.7/site-packages/pip/pep425tags.py:30: RuntimeWarning: invalid Python installation: unable to open /usr/az/envs/default/lib/python2.7/config/Makefile (No such file or directory)
warnings.warn("{0}".format(e), RuntimeWarning)
```
See [#348](https://github.com/Azure/azure-cli/issues/348)
See also [pypa/pip#1074](https://github.com/pypa/pip/issues/1074)
Errors with curl redirection
----------------------------
If you get an error with the curl command regarding the `-L` parameter or an error saying `Object Moved`, try using the full url instead of the aka.ms url:
```shell
# If you see this:
$ curl -L https://aka.ms/InstallAzureCli | bash
% Total % Received % Xferd Average Speed Time Time Time Current
Complete output from command python setup.py egg_info:
No working compiler found, or bogus compiler options
passed to the compiler from Python's distutils module.
See the error messages above.
(If they are about -mno-fused-madd and you are on OS/X 10.8,
see http://stackoverflow.com/questions/22313407/ .)
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-77i2fido/cffi/
```
```shell
#include<openssl/e_os2.h>
^
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
Failed building wheel for cryptography
```
See Stack Overflow question - [Failed to install Python Cryptography package with PIP and setup.py](http://stackoverflow.com/questions/22073516/failed-to-install-python-cryptography-package-with-pip-and-setup-py)