Or configure access with authentication if only the SMBv2 protocol is supported by the device. It is advisable to switch the network share to the SMBv3 mode.
In this case, Microsoft recommends changing the settings on a remote computer or NAS device that hosts the network folders. In most cases you can face this problem when accessing old NAS devices (usually guest access is enabled on them for ease of setup) or when opening network folders on Windows 7/2008 R2/Windows XP/2003 with the anonymous (guest) access configured (see the table of supported SMB protocol versions in different Windows editions). If you try to access a network shared folder using the SMB v2 protocol under the guest account, the following error appears in the SMB client log (Microsoft-Windows-SMBClient): Source: Microsoft-Windows-SMBClient In Windows 10 Home and Pro 1709, these changes are not applied and the network access under the guest account is working fine.