"how do i get internet explorer to handle custom protocol handlers correctly?" Code Answer

i guess there is a permissions issue with cmd.exe being called by internet explorer. instead, i had to start entirely over with powershell. here is the working registry keys with absolutely no additional scripts or putty program modifications that are shown in some workarounds i found online:

windows registry editor version 5.00

[hkey_classes_rootssh]
@="url:ssh protocol"
"url protocol"=""

[hkey_classes_rootsshshell]

[hkey_classes_rootsshshellopen]

[hkey_classes_rootsshshellopencommand]
@="c:\windows\system32\windowspowershell\v1.0\powershell.exe -command "$uri = [system.uri]'%l';&"${env:programfiles}\putty\putty.exe" -p $uri.port $uri.getcomponents([system.uricomponents]::userinfo -bor [system.uricomponents]::host, [system.uriformat]::uriescaped)""

i can now open ssh and vnc links from all three major browsers.

By Joel Gauvreau on January 13 2022

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