I ran into this error and following Artys solution with an additional step fixed it for me.
evolution --force shutdown cd ~/.evolution rm -rvf exchange cd ~/.evolution/mail rm -rvf exchange -- Evolution cannot connect to Exchange backend process https://bugs.launchpad.net/bugs/34199 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs