No access to the NAS after upgrading to OS 5, even after resets

[SBrown]

@Ahmed84

But it’s only partially solved, because I still don’t know what were the expected login/pass asked since there were none configured…

@Ahmed84 Sounds like your media player requires NTLMv1 and My Cloud OS 5 firmware 5.04.114 only supports NTLMv2. NTLMv1 will be a selectable option in the next firmware release so that may resolve your issue. If you comfortable with SSH, you can try the Sonos workaround posted here, Sonos Local Music Library (SMB) no longer works with OS 5 - #4 by SBrown