Try doing this stuff: https://bitsharestalk.org/index.php?topic=7768.0

Well I re-installed 4.9 and it connected long enough (about 30 minutes) to sync ...then stopped with 2 days or so still to go.....my fund balance is there....but all transactions have disappeared.
It has now reverted to it's previous no connection state.....so there we are ...all rather frustrating really.