At the time of creating a package, we ask package maintainers to include the checksum for the files that are being downloaded, so that at installation time, this checksum can be asserted to ensure that what is being installed is what is expected. Why do we need checksums?Ĭhocolatey introduced the concept of checksums for package installation to provide some assurance to the end users of Chocolatey that the application installers that are being downloaded are correct/valid. Since Chocolatey is secure by default, the installation of the package immediately exits, and an error is thrown:ĮRROR: Checksum for 'C:\Users\Administrator\AppData\Local\Temp\chocolatey\Julia\1.0.0\julia-1.0.0-win64.exe' did not meet '3bį5572cbcbc7848b235dcf21caf24ce26b9fb3839eb13db1a7170d20cdf834d' for checksum type 'sha256'. This can then be compared to the checksum (if provided) by the package maintainer.
#Encore pro 2 checksum download#
When the download of a file has been completed, Chocolatey will take a checksum (i.e. This tells us that Chocolatey was successfully able to download a file from the specified URL.Įrror - hashes do not match. Notice that it has downloaded the 64-bit version of this installer, since I ran it on a 64-bit operating system.ĭownload of julia-1.0.0-win64.exe (52.83 MB) completed. This tells us that Chocolatey successfully went into the chocolateyInstall.ps1 file and found the download URL that the package maintainer put in there. Progress: 100% - Completed download of C:\Users\Administrator\AppData\Local\Temp\chocolatey\Julia\1.0.0\julia-1.0.0-win64.exe
That's great, but what does that actually mean? Let's break this log down a little bit. I verified that I was getting the same error message by testing the installation on the local Chocolatey Testing Environment. The error that is being reported by Chocolatey is this: I started to write a response, but I realised that it was going to take more than 240 characters to explain, so I thought I would write a blog post about it instead. I would appreciate if you could help- Foad Sojoodi Farimani October 29, 2018 Earlier today on Twitter, I was asked this I tried installing but I get this error: