# 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:** 17

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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 26, 2021, 6:48pm UTC](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021/17 "2021-03-26T18:48:03Z")

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After half hour of testing every potential combination of what I did, the following is necessary and sufficient for the thing to work:

Check that `run(curl ...)` works. Then in Julia:

```julia
ENV["http_proxy"] = "http://<your_proxy>:<port>"
ENV["https_proy"] = "http://<your_proxy>:<port>"
ENV["JULIA_SSL_NO_VERIFY_HOSTS"] = "github.com"

```

And now it works correctly.

These commands might go to `.julia/config/startup.jl` for convenience.

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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)._