If connecting from an older client to a newer host, the security layer might be too high. TheITBros.com On the host, open Local Group Policy Editor gpedit.msc Navigate to:
Note: Disabling NLA reduces security and should only be done for troubleshooting purposes or within secure private networks. If connecting from an older client to a
Since 0x904 is inherently a network-related error, ensure your traffic isn't being throttled or blocked. If connecting from an older client to a
Mismatched encryption settings between the client and host can cause 0x904. On the host, open gpedit.msc . If connecting from an older client to a
This is the most common cause when a connection suddenly fails while others on the same network work fine.