skypehost.exe is a program which is probably NOT a virus or malware. So, if skypehost.exe is on your PC, it is probably ok, and will NOT cause problems. Even if your PC is clean, it is still recommended to run a good antivirus with a good track record, in order to defend yourself against threats.
This application is normally found in C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.19.856.0_x64__kzf8qxf38zg5c\SkypeHost.exe.
The MD5 fingerprint for this program is 226cf0d207d84e36f0ad6d723cd57378.
This application does NOT run as a Windows service. This is usually a good sign.
This program uses the net to communicate. In this day and age this is ok. For example, most of the apps on your PC check for new updates. In order to do this, Internet communications are required.
This is a 64-bit executable. It runs using the full capacity of nowadays' CPUs.
The digital certificate is missing from this program. The authors did not bother to sign it. This is usually bad.
It has an uninstall string in registry, which is a good sign. si are uninstall.