# 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:** 8
### Author:  [@lrnv](https://discourse.julialang.org/u/lrnv)
#### Post date: [March 26, 2021, 4:25pm UTC](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021/8 "2021-03-26T16:25:44Z")
Hey,
I just removed my 1.5.3 julia to install the new 1.6 on a window machine behind a proxy.
For some reasons Pkg cannot download artifacts anymore:
```julia
(@v1.6) pkg> add Distributions
Updating registry at `C:\Users\u009192\.julia\registries\General`
Updating git-repo `https://github.com/JuliaRegistries/General.git`
Resolving package versions...
Downloading artifact: Rmath
Downloading [>] 0.0 %
```
It hangs and never stop.
I setted up my `.curlrc` so that curl works correctly under my proxy:
```julia
julia> run(`curl https://google.com`)
301 Moved
301 Moved
The document has moved
here.
Process(`curl https://google.com`, ProcessExited(0))
julia>
```
Standard git operations also works correctly, since the General registry can be removed, reinstalled, updated, etc… I can install artifact-less packages without any issue.
Thinking Pkg was using Powershell to download the artifacts, I tried [this solution](https://discourse.julialang.org/t/downloading-packages-fails-on-work-network/30700/11) but it did not work, it still hangs on artifacts.
`Base.download("https://google.com")` has the same hanging issue. By looking around, upon forcing some environment variables that matches my `.curlrc` before launching julia by:
```julia
export BINARYPROVIDER_DOWNLOAD_ENGINE="curl --proxy --ssl-no-revoke --insecure"
```
I am able to make `Base.download` work, but not for https:
```julia
julia> Base.download("google.com")
"C:\\Users\\XXX\\AppData\\Local\\Temp\\jl_D511.tmp"
julia> Base.download("https://google.com")
ERROR: HTTP/1.0 200 Connection established (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012)) while requesting https://google.com
Stacktrace:
[Very long stacktrace, the same one.]
julia>
```
Moreover, I tried DebugArtifacts and the same thing occurs:
```julia
julia> using DebugArtifacts
julia> debug_artifact("OpenSpecFun")
[ Info: Platform: Windows x86_64 {cxxstring_abi=cxx11, julia_version=1.6.0, libgfortran_version=5.0.0}
Julia Version 1.6.0
Commit f9720dc2eb (2021-03-24 12:55 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-11.0.1 (ORCJIT, skylake)
[ Info: Downloading Artifacts.toml to C:\Users\u009192\AppData\Local\Temp\jl_GfvfmC\Artifacts.toml...
ERROR: HTTP/1.0 200 Connection established (schannel: next InitializeSecurityContext failed: Unknown error (0x80092012)) while requesting https://raw.githubusercontent.com/JuliaBinaryWrappers/OpenSpecFun_jll.jl/master/Artifacts.toml
Stacktrace:
[Very long stacktrace, the same one]
```
But with a simple run of curl, everything is still OK.
```julia
julia> run(`curl https://google.com`)
301 Moved
301 Moved
The document has moved
here.
Process(`curl https://google.com`, ProcessExited(0))
julia>
```
**How can i tell the libcurl that is inside julia to respond to my `.curlrc` ?**
**Can i pass directly some parameters (the same i passed in my `.curlrc` to Julia’s libcurl ? How ?**
---
_[View the full topic](https://discourse.julialang.org/t/julia-1-6-libcurl-firewall-download-issue-windows-schannel-certificate-revocation-check-failure/58021)._