How to fix “Windows cannot connect to printer” Errors in Windows 7

You can request the hotfix if you really want to, or even wait for Windows 7 SP1, but the “workaround” is so simple that there’s no point in trying the other options:

1. Go to the C:\Windows\system32\ directory and find the file “mscms.dll“
2. Copy that file to:
   • C:\windows\system32\spool\drivers\x64\3\ if you are using 64-bit Windows 7
   • C:\windows\system32\spool\drivers\w32x86\3\ if you are using 32-bit Windows 7 
    nguon: "https://scottiestech.info/2010/09/21/how-to-fix-windows-cannot-connect-to-printer-errors-in-windows-7/"