I recently started to manage the existing network of a small business. They have about 10 machines, with various versions of Windows (mostly XP Pro and Seven, 32 bits).
I installed a new server (a headless PC with good hardware, not rack-mounted), for file sharing and backup (this was previously done from a workstation), and used Win 7 Pro x64 as the OS.
I setup the server, shared the folder I wanted, with the following settings:
- network type: work
- workgroup: workgroup (same on all PCs of the network)
- sharing settings: password access on
- all shared folders are shared with Everyone, with full read/write access both in sharing and security tabs
Everything worked well, I left the office in the evening, but when they came back in the morning, XP machines couldn't access any of the shared folders. The 7 (and Visa) machines were fine though. I tried different things (I could connect to the server from XP machines using remote desktop), but in the end I simply rebooted the server, and it worked.
Same thing happened this morning, access denied from XP machines, server reboot fixed the problem.
I check, nothing happened on the server during the night, except automatic backup from the main disk to a network share.
What could be the problem?