Time machine does not work any longer

hello!

i have the “my book live 2tb” since 6 weeks. on the first day i have configured my mac to put all time machine backups to “my book live”. i saw 2 new shared in my network settings (mybooklive and mybooklive-tm) and everything worked fine.

today my mac only is able to communicate to one share (mybooklive) and time machine does not work any longer. when i try to reconfigure time machine the list for possible volumes is empty. 6 weeks ago i could choose the “my book live”. i still can see my mac in the backup list (http access).

maybe one of you can help me.

kind regards, rene

Hi there, what if you try a factory reset in case the private user for TM has lost the configuration?