https://bugs.winehq.org/show_bug.cgi?id=39087
--- Comment #7 from Laurent Dinclaux lox@knc.nc --- (In reply to Laurent Dinclaux from comment #6)
(In reply to Rosanne DiMesio from comment #3)
From the log:
err:winediag:SECUR32_initNTLMSP ntlm_auth was not found or is outdated. Make sure that ntlm_auth >= 3.0.25 is in your path. Usually, you can find it in the winbind package of your distribution.
You are missing a dependency of Wine. You need to fix that.
Installing winbind didn't help
Though I don't have the error message anymore after installing winbind, saving to a GVFS mounted windows share is still giving the same error in the affected apps.