The registry fix, apply it before you install steam, first uninstall then apply the fix then install steam, make sure all the permissions are correctly added before installing.

if your steam installed into the
c:/program files(x86)/Steam/

Make sure that your registry is set for only c:/program files/Steam/Steam.exe

Hope this helps, goodluck took me awile.

1) Uninstall Steam

2) Open notepad and paste the following

— Copy below this line —

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\steam]
@=”URL:steam protocol”
“URL Protocol”=”"

[HKEY_CLASSES_ROOT\steam\DefaultIcon]
@=”steam.exe”

[HKEY_CLASSES_ROOT\steam\Shell]

[HKEY_CLASSES_ROOT\steam\Shell\Open]

[HKEY_CLASSES_ROOT\steam\Shell\Open\Command]
@=”\”C:\\Program Files\\Steam\\steam.exe\” \”%1\”"

— Copy above this line —

and save it as Steam.reg
(yeah, the file is the same as in https://support.steampowered.com/kb_article.php?ref=2087-MZES-9065).

3) Double-click the freshly created Steam.reg to add its contents to registry.

4) Open the registry editor (regedit) and locate HKEY_CLASSES_ROOT/steam

5) Right-click the key in the tree (HKEY_CLASSES_ROOT/steam) and modify the permissions so that your user account has full rights. Apply, OK.

6) Re-install steam.

7) ???

Profit

This worked for me where other solutions presented across the didn’t. Hope it helps someone. I’m gonna post this around until you like it.