PowerShell Installing NuGet, says unable to access internet, but I actually can
could be TLS security related (ref: https://rnelson0.com/2018/05/17/powershell-in-a-post-tls1-1-world/)
Try this command first:
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
then try to do the update. Note: the command only affects the current session and does not persist.
You may also check what version of TLS for client is set on computer. Looks like TLS 1.0 for client is required. (ref: https://powershell.org/forums/topic/wmf-5-1-upgrade-broken-repositories/)
Michael
As per https://community.spiceworks.com/topic/2265662-powershell-get-download-problem
I had the same problem today...
My issue was PowerShell Gallery would not download anything on W2016 boxes:
VERBOSE: InstallPackage' - name='AzureRM.BootStrapper',
version='0.5.0',destination='C:\Users\Administrator\AppData\Local\Temp\2\1254134668'
VERBOSE: DownloadPackage' - name='AzureRM.BootStrapper',
version='0.5.0',destination='C:\Users\Administrator\AppData\Local\Temp\2\1254134668\AzureRM.BootStrapper\AzureRM.BootSt
rapper.nupkg', uri='https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0'
VERBOSE: Downloading 'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0'.
VERBOSE: An error occurred while sending the request.
VERBOSE: Retry downloading 'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0' for '2' more
times
VERBOSE: An error occurred while sending the request.
VERBOSE: Retry downloading 'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0' for '1' more
times
VERBOSE: An error occurred while sending the request.
VERBOSE: Retry downloading 'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0' for '0' more
times
VERBOSE: Downloading package 'AzureRM.BootStrapper' failed, please make sure
'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0' is accessable.
WARNING: Source Location 'https://www.powershellgallery.com/api/v2/package/AzureRM.BootStrapper/0.5.0' is not valid.
PackageManagement\Install-Package : Package 'AzureRM.BootStrapper' failed to download.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\PSModule.psm1:1772 char:21
+ ... $null = PackageManagement\Install-Package @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ResourceUnavailable: (C:\Users\Admini...tStrapper.nupkg:String) [Install-Package], Excep
tion
+ FullyQualifiedErrorId : PackageFailedInstallOrDownload,Microsoft.PowerShell.PackageManagement.Cmdlets.InstallPac
kage
What helped me to find out it was TLS v1.2 was this error in Fiddler:
System.Security.Authentication.AuthenticationException A call to SSPI failed, see inner exception
From there I got this -> A call to SSPI failed, see inner exception - The Local Security Authority cannot be contacted
Then tested locally with:
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Which worked fine!
Hopefully, that will help somebody in the future :-)
You can set it for the whole .NET framework by editing registry:
# Set strong cryptography on 64 bit .Net Framework (version 4 and above)
Set-ItemProperty -Path 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type DWord
# Set strong cryptography on 32 bit .Net Framework (version 4 and above)
Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type DWord
This happened a few days ago on Windows Server 2016 Datacentre boxes, Win 2019 works fine still.
Commands thanks to: https://johnlouros.com/blog/enabling-strong-cryptography-for-all-dot-net-applications
Happy Azure Stacking!!!
Try this:
[System.Net.WebRequest]::DefaultWebProxy.Credentials = System.Net.CredentialCache]::DefaultCredentials
If the above doesn't work try this:
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12