# Strange Error at Installing Packages \`git\` failed to clone

**URL:** <https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578>\
**Category:** New to Julia\
**Tags:** packages, git, installation\
**Created:** [June 25, 2021, 8:52pm UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578 "2021-06-25T20:52:18Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![StefanKarpinski](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stefankarpinski/32/24_2.png) [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)\
**Post date:** [June 29, 2021, 9:02am UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578/21 "2021-06-29T09:02:36Z")

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You have two options:

1. Add your firewall’s certificate to the Windows system root cert store (and don’t try to use a PEM file, since libgit2 can’t do that)

2. Tell Julia not to verify [GitHub.com](http://GitHub.com) by setting the appropriate options via environment variable documented in NetworkOptions.jl

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**Author:** ![jmcastro2109](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jmcastro2109/32/38427_2.png) [@jmcastro2109](https://discourse.julialang.org/u/jmcastro2109)\
**Post date:** [June 29, 2021, 11:42am UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578/22 "2021-06-29T11:42:37Z")

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Hi thanks so much!

Can you please elaborate on the second option? What is the exact command I should write?

I am sorry, but I am having such a hard time understanding this error.

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<div class="post-metadata">

**Author:** ![jmcastro2109](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jmcastro2109/32/38427_2.png) [@jmcastro2109](https://discourse.julialang.org/u/jmcastro2109)\
**Post date:** [June 29, 2021, 1:05pm UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578/23 "2021-06-29T13:05:52Z")

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Is the second option, writing the following in my startup file

```julia
@eval Module() begin

    import NetworkOptions

    ENV["JULIA_SSL_NO_VERIFY_HOSTS"] = "github.com"

end

```

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**Author:** ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Post date:** [June 29, 2021, 9:29pm UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578/24 "2021-06-29T21:29:20Z")

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Try `ENV["JULIA_SSL_NO_VERIFY_HOSTS"] = "**.github.com"` (see examples in the [README](https://github.com/JuliaLang/NetworkOptions.jl#verify_host)). Also, it should be enough to set it, you don’t need to `import NetworkOptions`.

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [February 14, 2022, 2:05pm UTC](https://discourse.julialang.org/t/strange-error-at-installing-packages-git-failed-to-clone/63578/25 "2022-02-14T14:05:00Z")

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Split this topic on February 14, 2022, 2:05pm UTC

3 posts were split to a new topic: [Failed to add package by https URL](https://discourse.julialang.org/t/failed-to-add-package-by-https-url/76436)

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