Begin by disabling dllhost.exe, by following these steps:
Launch command prompt as an Administrator and navigate to one of the following folders:

• C:\windows\syswow64 (for 64-bit systems)
• C:\windows\system32 (for 32-bit systems)

Type the following command into command prompt and press enter to take ownership:

• takeown /f dllhost.exe /a

Type the following command into command prompt and press enter to disable permissions:

• cacls dllhost.exe /p everyone:n

Restart the computer.