# Problem Building Arpack / Windows Administrator Privileges

**URL:** <https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [May 11, 2019, 4:25pm UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113 "2019-05-11T16:25:33Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![JP\_91](https://avatars.discourse-cdn.com/v4/letter/j/9dc877/32.png) [@JP\_91](https://discourse.julialang.org/u/JP_91)\
**Post date:** [May 11, 2019, 4:25pm UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/1 "2019-05-11T16:25:33Z")

</div>

Hi Everyone,

I am having some trouble installing Arpack. The error reads as **“Warning: On Windows, creating file symlinks requires Administrator privileges”**. I checked whether my user has Administrator privileges, and this is the case. I get a similar error if I type Pkg.build(“Arpack”), Pkg.add(“Arpack”).

In advance, thank you very much for your help!

julia\> Pkg.build(“Distributions”)  
Building Arpack ──────────→ `C:\Users\Juan\.julia\packages\Arpack\UiiMc\deps\build.log`  
┌ Error: Error building `Arpack`:  
│ ┌ Warning: On Windows, creating file symlinks requires Administrator privileges  
│ └ @ Base.Filesystem file.jl:794  
│ [Info: Downloading [https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz](https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz) to C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\usr\downloads\Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz…  
│ ERROR: LoadError: Could not download [https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz](https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz) to C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\usr\downloads\Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz:  
│ ErrorException(“”)  
│ Stacktrace:  
│ [1] error(::String) at .\error.jl:33  
│ [2] #download#93(::Bool, ::Function, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\PlatformEngines.jl:498  
│ [3] #download at .\none:0 [inlined]  
│ [4] #download\_verify#94(::Bool, ::Bool, ::Bool, ::Function, ::String, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\PlatformEngines.jl:567  
│ [5] #download\_verify at .\none:0 [inlined]  
│ [6] #install#133(::Prefix, ::String, ::Bool, ::Bool, ::Bool, ::Function, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\Prefix.jl:314  
│ [7] (::getfield(BinaryProvider, Symbol(“#kw##install”)))(::NamedTuple{(:prefix, :force, :verbose),Tuple{Prefix,Bool,Bool}}, ::typeof(install), ::String, ::String) at .\none:0  
│ [8] top-level scope at C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\build.jl:70  
│ [9] include at .\boot.jl:326 [inlined]  
│ [10] include\_relative(::Module, ::String) at .\loading.jl:1038  
│ [11] include(::Module, ::String) at .\sysimg.jl:29  
│ [12] include(::String) at .\client.jl:403  
│ [13] top-level scope at none:0  
│ in expression starting at C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\build.jl:68  
│ Exception setting “SecurityProtocol”: “Cannot convert null to type “System.Net.SecurityProtocolType” due to invalid enumeration values. Specify one of the following enumeration values and try again. The possible enumeration values are “Ssl3, Tls”.”  
│ At line:1 char:35  
│ + [System.Net.ServicePointManager]:: \<\<\<\< SecurityProtocol =  
│ + CategoryInfo : InvalidOperation: (🙂 , RuntimeException  
│ + FullyQualifiedErrorId : PropertyAssignmentException  
│  
│ Exception calling “DownloadFile” with “2” argument(s): “The underlying connection was closed: An unexpected error occurred on a send.”  
│ At line:5 char:24  
│ + $webclient.DownloadFile \<\<\<\< (“[https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz](https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz)”, “C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\usr\downloads\Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz”)  
│ + CategoryInfo : NotSpecified: (🙂 , MethodInvocationException  
│ + FullyQualifiedErrorId : DotNetMethodException  
│

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<div class="post-metadata">

**Author:** ![Mattriks](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mattriks/32/351_2.png) [@Mattriks](https://discourse.julialang.org/u/Mattriks)\
**Post date:** [May 12, 2019, 12:39am UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/2 "2019-05-12T00:39:51Z")

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Launch the Julia terminal using right-click and “Run as administrator”. It’s good to do this when installing or upgrading packages.

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<div class="post-metadata">

**Author:** ![JP\_91](https://avatars.discourse-cdn.com/v4/letter/j/9dc877/32.png) [@JP\_91](https://discourse.julialang.org/u/JP_91)\
**Post date:** [May 16, 2019, 2:43pm UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/3 "2019-05-16T14:43:19Z")

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Thank you very much. This was very useful. I run it using administrator privileges, and I now run into a different error (please see below). For some reason, it cannot download the package. This was part of the original error message when I was running it without administrator privileges. Any advice is greatly appreciated!

Error: Error building `Arpack`:  
│ [Info: Downloading [https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz](https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz) to C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\usr\downloads\Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz…  
│ ERROR: LoadError: Could not download [https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz](https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz) to C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\usr\downloads\Arpack.v3.5.0-3.x86\_64-w64-mingw32-gcc4.tar.gz:  
│ ErrorException(“”)  
│ Stacktrace:  
│ [1] error(::String) at .\error.jl:33  
│ [2] #download#93(::Bool, ::Function, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\PlatformEngines.jl:498  
│ [3] #download at .\none:0 [inlined]  
│ [4] #download\_verify#94(::Bool, ::Bool, ::Bool, ::Function, ::String, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\PlatformEngines.jl:567  
│ [5] #download\_verify at .\none:0 [inlined]  
│ [6] #install#133(::Prefix, ::String, ::Bool, ::Bool, ::Bool, ::Function, ::String, ::String) at C:\Users\Juan.julia\packages\BinaryProvider\4F5Hq\src\Prefix.jl:314  
│ [7] (::getfield(BinaryProvider, Symbol(“#kw##install”)))(::NamedTuple{(:prefix, :force, :verbose),Tuple{Prefix,Bool,Bool}}, ::typeof(install), ::String, ::String) at .\none:0  
│ [8] top-level scope at C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\build.jl:70  
│ [9] include at .\boot.jl:326 [inlined]  
│ [10] include\_relative(::Module, ::String) at .\loading.jl:1038  
│ [11] include(::Module, ::String) at .\sysimg.jl:29  
│ [12] include(::String) at .\client.jl:403  
│ [13] top-level scope at none:0  
│ in expression starting at C:\Users\Juan.julia\packages\Arpack\UiiMc\deps\build.jl:68  
│ Exception setting “SecurityProtocol”: “Cannot convert null to type “System.Net.SecurityProtocolType” due to invalid enumeration values. Specify one of the following enumer  
│ ation values and try again. The possible enumeration values are “Ssl3, Tls”.”  
│ At line:1 char:35  
│ + [System.Net.ServicePointManager]:: \<\<\<\< SecurityProtocol =  
│ + CategoryInfo : InvalidOperation: (🙂 , RuntimeException  
│ + FullyQualifiedErrorId : PropertyAssignmentException  
│  
│ Exception calling “DownloadFile” with “2” argument(s): “The underlying connection was closed: An unexpected error occurred on a send.”

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<div class="post-metadata">

**Author:** ![Mattriks](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mattriks/32/351_2.png) [@Mattriks](https://discourse.julialang.org/u/Mattriks)\
**Post date:** [May 16, 2019, 5:48pm UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/4 "2019-05-16T17:48:01Z")

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Other people have run into this error, for different packages:  
[https://discourse.julialang.org/search?q=System.Net.SecurityProtocolType%20order%3Alatest](https://discourse.julialang.org/search?q=System.Net.SecurityProtocolType%20order%3Alatest)

Don’t know what the solution is in your case.

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<div class="post-metadata">

**Author:** ![JP\_91](https://avatars.discourse-cdn.com/v4/letter/j/9dc877/32.png) [@JP\_91](https://discourse.julialang.org/u/JP_91)\
**Post date:** [May 17, 2019, 8:10am UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/5 "2019-05-17T08:10:52Z")

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Ok. Thanks a lot. Will try that.

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<div class="post-metadata">

**Author:** ![Bastian\_Moya](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bastian_moya/32/9516_2.png) [@Bastian\_Moya](https://discourse.julialang.org/u/Bastian_Moya)\
**Post date:** [August 15, 2019, 5:46am UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/6 "2019-08-15T05:46:43Z")

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Did you solve the problem?

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<div class="post-metadata">

**Author:** ![JP\_91](https://avatars.discourse-cdn.com/v4/letter/j/9dc877/32.png) [@JP\_91](https://discourse.julialang.org/u/JP_91)\
**Post date:** [August 15, 2019, 6:27am UTC](https://discourse.julialang.org/t/problem-building-arpack-windows-administrator-privileges/24113/7 "2019-08-15T06:27:10Z")

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Yes. But had to manually install the files. I then changed my computer, that has windows 10, re-installed everything and had no problems in the installation. Thanks for checking. Best, Juan