How to Fix Coh32.exe Error

Coh32.exe is a component of Norton Antivirus (NAV) and Norton Internet Security (NIS). NAV and NIS are antivirus detection, prevention and removal tools developed by the Symantec Corporation.

File Information

By default, you will find the coh32.exe file in the C:\Program Files\Common Files folder. Known file sizes on Windows XP are 1230432, 1234272 and 1234528 bytes.

Coh32.exe Problems and Solutions

High CPU usage is one of the main issues reported by the coh32.exe file. Some users have reported that at times, this exe file can use up to a 100% of CPU resources. Naturally, this dramatically slows down your PC and computing slows to a crawl when this happens.

This CPU usage problem is caused by the corruption of the coh32.exe file. You can fix this issue by doing a quick reinstall. To perform the reinstall efficiently, follow the steps listed below:

  1. Download the Norton Removal Tool.
  2. Run the removal tool, following the instructions on the site to remove all files, folders, and registry entries related to the Norton products installed on your system.
  3. Restart your computer.
  4. Log into Windows and re-run the Norton removal tool to ensure that nothing is left behind.
  5. Here, you may use a good registry cleaner tool get rid of any orphaned Norton registry entries.
  6. Restart your computer after the process finishes.
  7. Ensure that your internet connection is stable.
  8. Reinstall Norton and allow LiveUpdate to run and install the latest files on the system.

Immediately run an antivirus scan to determine whether the questionable file is valid or not. A good antivirus tool can detect and remove threats quickly. Protection also increases if you partner your antivirus with a strong anti-spyware program.