Najprv skús zrušiť predvolený program z registrov

Windows Registry Editor Version 5.00

[-HKEY_CURRENT_USER\Software\Classes\.srt]

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\Cur rentVersion\Explorer\FileExts\.srt]

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\Cur rentVersion\Explorer\RecentDocs\.srt]