# Error building packages on Windows 7 x64. (Old title GR.jl)

**URL:** <https://discourse.julialang.org/t/error-building-packages-on-windows-7-x64-old-title-gr-jl/17510>\
**Category:** New to Julia\
**Created:** [November 14, 2018, 11:55am UTC](https://discourse.julialang.org/t/error-building-packages-on-windows-7-x64-old-title-gr-jl/17510 "2018-11-14T11:55:35Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [November 14, 2018, 12:16pm UTC](https://discourse.julialang.org/t/error-building-packages-on-windows-7-x64-old-title-gr-jl/17510/2 "2018-11-14T12:16:15Z")

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This may be the cure:

> **[Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP...](https://support.microsoft.com/en-us/topic/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-winhttp-in-windows-c4bd73d2-31d7-761e-0178-11268bb10392)**
>
> Describes an update that adds TLS 1.1 and TLS 1.2 to default security protocols in Windows Server 2012, Windows 7 SP1, and Windows Server 2008 R2 SP1.

And see thread:

> [@Git / SSL Errors while installing packages](https://discourse.julialang.org/t/git-ssl-errors-while-installing-packages/9347):
>
> I have been getting the following error upon installation of any Julia package in all my CI builds for a couple of hours. INFO: Cloning METADATA from https://github.com/JuliaLang/METADATA.jl ERROR: GitError(Code:ERROR, Class:Net, SSL error: error:1407742E:SSL routines:SSL23\_GET\_SERVER\_HELLO:tlsv1 alert protocol version) Is this a temporary service / network outage or something that needs solving?

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