Unknown file. It may be legitimate. – npf.sys – b9e1365567b0f77e345a286daa187f6a

I will tell you in this post how to fix the issue manually and how to clean it automatically using a special powerful removal tool. You can download the removal program for free here:

Manual removal instructions:

Unknown file. It may be legitimate.
SHA256: c85ec9a19d5f5ad00778c972b88f0de48ca4228ba1da605890886e5817b26865
SHA1: 086ca7c099e069c26ae3eab346d71a1c1567f9a0
MD5: b9e1365567b0f77e345a286daa187f6a
File size: 839680 bytes

Created files:

%SysDir%\drivers\npf.sys – Unknown file. It may be legitimate.

Unknown file. It may be legitimate. created autostart registry keys:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SonyAgent: B9E1365567B0F77E345A286DAA187F6A.EXE