# Windows 10 version still doesn't work

Hi,

When I installed cadabra 2.2.7 in win10, I met following errors:

-- Downloading http://ftp.gnome.org/pub/GNOME/sources/atkmm/2.24/atkmm-
2.24.2.tar.xz...

File does not have expected hash:

Expected hash: [ 427714cdf3b10e3f9bc36df09c4b05608d295f5895fb1e079
b9bd84afdf7bf1cfdec6794ced7f1e35bd430b76f87792
df4ee63c515071a2ea6e3e51e672cdbe2 ]
Actual hash: [ 2edac66538c334ec6957e2a518d0a714c60
7655f75c838dcbe4e5f5b30c2ea87a703bc11bf4125837cd
13d520071a8ec292c93550176218ab7e195a52078f888 ]

The file may have been corrupted in transit.  This can be caused by
proxies.  If you use a proxy, please set the HTTPS_PROXY and HTTP_PROXY
environment variables to

Call Stack (most recent call first):
scripts/ports.cmake:85 (include)

Error: Building package atkmm:x64-windows failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with .\vcpkg update, then
submit an issue at https://github.com/Microsoft/vcpkg/issues including:
Package: atkmm:x64-windows
Vcpkg version: 2019.08.27-nohash

Additionally, attach any relevant sections from the log files above.


  Starting package 1/4: atkmm:x64-windows
Building package atkmm[core]:x64-windows...

File does not have expected hash:

Expected hash: [ 427714cdf3b10e3f9bc36df09c4b05608d295f5895fb1e079b9bd84afdf7bf1cfdec6794ced7f1e35bd430b76f87792df4ee63c515071a2ea6e3e51e672cdbe2 ]

Call Stack (most recent call first):
scripts/ports.cmake:85 (include)

Error: Building package atkmm:x64-windows failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with .\vcpkg update, then
submit an issue at https://github.com/Microsoft/vcpkg/issues including:
Package: atkmm:x64-windows
Vcpkg version: 2019.08.27-nohash


How to solve it?

edited

You seem to be compiling from source, right? Before we take this further, have you tried doing vcpkg update to ensure that you have the latest vcpkg packages on your system?

Yes, I am building from source. I have done vcpkg update, but the problem is still unsolved.

Well it's obviously a vcpkg issue; that error has nothing to do with cadabra. I know that gtkmm was broken (hence I couldn't build new windows binaries for some time now), but now they probably tried to fix that and messed up related things too. For a Microsoft product it's probably to be expected that none of this really works... There isn't much I can do at this stage, but you may want to report it directly to their vcpkg issue tracker.

Fine then. When will the Jupyter version be OK?I have been waiting it.

You can build the Jupyter kernel already, see the instructions at https://github.com/kpeeters/cadabra2/blob/master/JUPYTER.rst (only tested on Linux though). Alternatively, you can use the Cadabra cloud, which is Jupyter-based; I have given you access and sent details in an email.

There is a new 2.2.7f installer which fixes a number of issues with previous windows installers. If you are still having problems with the old installer, can you please give this new one a shot? It is at