# Julia 1.6 libcurl firewall download issue: Windows Schannel certificate revocation check failure

**URL:** <https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021>\
**Category:** General Usage\
**Tags:** libcurl\
**Created:** [March 26, 2021, 2:43pm UTC](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021 "2021-03-26T14:43:26Z")\
**Posts on this page:** 1\
**Showing post:** 19

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**Author:** ![lrnv](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lrnv/32/19373_2.png) [@lrnv](https://discourse.julialang.org/u/lrnv)\
**Post date:** [March 30, 2021, 11:40am UTC](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021/19 "2021-03-30T11:40:08Z")

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One more thing that was necessary for me:

> [@Problem with curl.exe (Windows) and package installation](https://discourse.julialang.org/t/problem-with-curl-exe-windows-and-package-installation/29525/51):
>
> create a file called “\_curlrc” that contains “insecure” (wihout quote) and place it in your %APPDATA% (echo %APPDATA%). For windows, curlrc file should begin with underscore. [https://curl.haxx.se/docs/manual.html](https://curl.haxx.se/docs/manual.html)

I had my .curlrc in my home folder, and not in the right %APPDATA% folder, which had no effects on the windows curl that was called from julia.

Setting the proxy parmaeters and the insecure option in the right file made it work perfectly.

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_[View the full topic](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021)._