I guess your running Windows 11? if so take a look at this post:
to access via the explorer you type file://<ip-address of the device>
But i would strongly suggest to use FileZilla or WinSCP. This to avoid permission issues.
start menu
Type: Edit group policy
navigate to: Computer Configuration > Administrative Templates > Network > Lanman Workstation
Find the policy named Enable insecure guest logons.
Double-click on the policy to open its settings.
Set it to Enabled.
Click Apply and then OK.
navigate to: Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options
configure Account: Guest Account Status to “Enabled”
navigate to: Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options
disable this policy "Microsoft network client: Digitally sign communications (always)
start menu:
type Registry Editor
navigate to: Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters
Add dword > AllowInsecureGuestAuth > value date = 1
Reboot Windows.
