Got it, let's do our best to solve the problem.
On the machine that will be turned off remotely, with an administrator account, do these procedures:
Windows+R, type: services.msc, press enter, find the Remote Registry service, double click, in startup type, leave Automatic, and in the service status click Start, apply, Ok.
Windows+Q, search for: Allow an application through Windows Firewall.
Enable the “Windows Management Instrumentation (WMI)” option. By default, the service will only be allowed on private networks, but if you want to access via public networks as well (Internet), check the corresponding checkbox.
Windows+i, Network and Internet, Network and Sharing Center, Change advanced sharing settings, Make sure these options are enabled, ''Enable network discovery'' and ''Enable automatic configuration of network connected devices ''. In File and Printer Sharing, make sure that sharing is turned on.
Windows+R, type: Regedit, press enter, browse these folders:
Computer\HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System. Right click on the System folder, New -> DWORD Value (32-bit). Put the following name: LocalAccountTokenFilterPolicy, now double click on the created key, Value data, put the number 1, Ok. Close everything and restart the PC to apply the settings.
I hope this helps.
Graciously,
Claudeir