I´m currently using ownCloud desktop client 2.4.3 (Build 10188). I´m using this old version as the server is running version 8.1 .
Everything works fine, but for some reason, in my Windows I don´t have the option to share via owncloud. I have the same version running on other computers and it works fine.
The only change that I´ve made is adding the DWORD entry for skipping updates (but I also done this on the other computers).
I´ve tried reinstalling the application several times and deleting registry, but I still have the same issue.