What is nethost.exe file ?

Most antivirus programs identify nethost.exe as malware—for example Sophos identifies it as BrowserTools (PUA), and Avast identifies it as Win32:PUP-gen [PUP].

Follow steps bellow to try fix the problem with nethost.exe

1. Use cleanmgr

To run the command cleanmgr :
Press Windows key + Q.
Enter cmd in search box , followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command cleanmgr and press Enter.

2. Use sfc /scannow

To run the command sfc /scannow :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command sfc /scannow and press Enter.

3. uninstalling programs :

To uninstall unnecessary programs :
Open the Start menu (Press Windows key + X) .
Click the first menu item Programs and Features.
Search unnecessary programs in the list of installed programs, .
Click the software you want to uninstall.

4. using msconfig

To run the command msconfig :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command msconfig and press Enter.

5. Automatic Update

To run the command wuauclt /ShowWindowsUpdate:
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command wuauclt /ShowWindowsUpdate and press Enter.

6. Use resmon command

To run the command resmon :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command resmon and press Enter.

7. use DISM.exe

To run the command DISM.exe /Online /Cleanup-image /Restorehealth :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.

nethost.exe descriptions

Nethost.exe is not essential for the Windows OS and causes relatively few problems. The file nethost.exe is located in a subfolder of the user’s profile folder (mostly C:UsersUSERNAMEAppDataLocalSystemDir).;Known file sizes on Windows 10/8/7/XP are 2,027,520 bytes (25% of all occurrences), 1,007,104 bytes, 933,376 bytes or 1,693,184 bytes.;Nethost.exe is a file with no information about its developer. The program is not visible. It is not a Windows core file.;Nethost.exe is able to monitor applications.;Therefore the technical security rating is 61% dangerous, however you should also read the user reviews.