How to edit the files manually instead of having sfs-select do it for you:


1 close steam (!)
2 find the file Steam/config/config.vdf
3 make a backup of it
4 edit it in you favorite texteditor
5 start steam up again



to edit config.vdf find a section in it looking like this:
        "AuthorizedDevice"
        {
                "12345678"
                {
                        "timeused"              "1399063892"
                        "description"           "my-pc"
                        "tokenid"               "-1234567890123456789"
                }
                "87654321"
                {
                        "timeused"              "1400276039"
                        "description"           "my-pc"
                        "tokenid"               "-9876543210987654321"
                }
        }
it's probably near the bottom

each of the sections starting with e.g. "12345678" represent one friend who has authorized your PC
the number is the steam account number of that friend

in the example above two friends have autorized that PC, 12345678 and 87654321
in adition friend 12345678 has priority over friend 87654321
i.e. games that both of them own in EXACTLY the same "edition" (steam "sub" more exactly) get listed under 12345678
(for different editions of the same game see readme.txt)



you can make steam temporarily forget about an authorization by completely removing the respective section:
        "AuthorizedDevice"
        {
                "87654321"
                {
                        "timeused"              "1400276039"
                        "description"           "my-pc"
                        "tokenid"               "-9876543210987654321"
                }
        }
for example would only list games from friend 87654321

to show 12345678's games again copy his section from the backup



you can change the priority by changing the sections order
        "AuthorizedDevice"
        {
                "87654321"
                {
                        "timeused"              "1400276039"
                        "description"           "my-pc"
                        "tokenid"               "-9876543210987654321"
                }
                "12345678"
                {
                        "timeused"              "1399063892"
                        "description"           "my-pc"
                        "tokenid"               "-1234567890123456789"
                }
        }
would show editions they both own under 87654321 instead
