# Need help with fullnode wallet 0.9.21 **URL:** \ **Category:** ZecWallet\ **Created:** [November 22, 2020, 4:42am UTC](https://forum.zcashcommunity.com/t/need-help-with-fullnode-wallet-0-9-21/37827 "2020-11-22T04:42:15Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![madars](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/madars/32/15616_2.png) [@madars](https://forum.zcashcommunity.com/u/madars)\ **Post date:** [November 27, 2020, 12:05am UTC](https://forum.zcashcommunity.com/t/need-help-with-fullnode-wallet-0-9-21/37827/19 "2020-11-27T00:05:33Z")
Thank you for [your Dockerfile](https://gist.github.com/adityapk00/421eef9d0a00eaa0d7c0da1394b1181b), @adityapk00! I can confirm that by bumping up the Ubuntu version from `ubuntu:18.04` to `ubuntu:20.04` the compilation succeeds and the resulting `zcashd.exe` (compiled from `v4.1.1` git checkout) works fine under Windows 7 Enterprise SP1. I trimmed the package imports to just `apt install -y git build-essential curl g++-mingw-w64-x86-64 gcc-mingw-w64-x86-64 libtinfo5 automake libtool bsdmainutils`, as the rest seemed to be implied in Ubuntu 20.04 (I guess they renamed `python-zmq` to `python3-zmq` in the Python 3 transition but my compilation succeeded even without that…) Are the others necessary/enable features? I noticed that `zcashd.exe` terminal output did not show the ANSI art logo and maybe that’s enabled by ncurses. Will try to investigate in a bit… FWIW, compilation under Ubuntu 20.10 fails, as it seems to have a strict tar implementation (clang’s tar.xz archive packs symlinks (e.g. `lib/liblldb.so`) before the corresponding files (e.g. `lib/liblldb.so.8.0.0`) so the un-`tar`-ing step fails with `"Cannot change mode to rwxrwxr-x"` after tar tries to chmod a bunch of dangling symlinks. But 20.04 is the most stable LTS, and 20.10 was released just last month, so maybe that’s expected. I have older hardware (esp. laptops) laying around that run Windows 7 just fine and would make for good self-sovereignty ZecWallet full nodes, but Windows 10 (which I have a license for) is simply too slow ☹ Plus, peer cryptocurrencies like Bitcoin or Monero run fine on Windows 7, so it would be great if ZecWallet could too! --- _[View the full topic](https://forum.zcashcommunity.com/t/need-help-with-fullnode-wallet-0-9-21/37827)._