What is navapsvc.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the navapsvc.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Navapsvc.exe file information

Windows Task Manager with navapsvc
Navapsvc.exe process in Windows Task Manager

The process known as Norton AntiVirus Auto-Protect Service belongs to software Norton AntiVirus (version 2005, 2003, 2004) by Symantec (

Description: Navapsvc.exe is not essential for Windows and will often cause problems. Navapsvc.exe is located in a subfolder of "C:\Program Files"—e.g. C:\Program Files\Norton AntiVirus\. Known file sizes on Windows 10/8/7/XP are 116,336 bytes (23% of all occurrences), 177,264 bytes and 8 more variants. 
The program is not visible. It is a Verisign signed file. The file is digitally signed. Navapsvc.exe is not a Windows system file. Therefore the technical security rating is 16% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with Norton AntiVirus come up, you can uninstall it from your computer using the Control Panel applet Uninstall a Program, visit the support page or check if there is a newer version available.

Recommended: Identify navapsvc.exe related errors

Important: Some malware camouflages itself as navapsvc.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the navapsvc.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

there goes 96% of cpu power. Slows computer down big time. A real turn down. Just uninstall norton. There are more options out there
It eats up ram - huge chucks of ram and it cant deltet it -- do not install norton it is a virus - and I have duall core procesesr not slow
  James Beuthling  
it wont let me delet this product i want to
This file eats about 55% of my CPU at times it makes my CPU be used up to 100% with other programs opened. Defenedly extremely annyoing. Someone said that if you complaint about your cpu being completely taken because of this program that you must have an ancient computer. I got a 3.0GHZ PENTIUM 4 and let me tell you there is nothing slow about my computer. But this file keeps getting in the way of everything i do. Is there a way to make it so that it doesnt take so much CPU or to actually remove the damn thing? any info will be appreciated.
The process is an extreme user on my system at start up, which for me is no surprise as my computer has a processer less than a gig and the RAM is horrendous. However, if I just let it do its thing, I can easily have back the speed I usually have on my computer and the CPU usage is usually about 7% steady all together for me with this process running continuously. So unless NAVAPSVC.exe came out of nowhere and you don't know where it came from, there is actually nothing to worry about except maybe finding a better processor that works with the rest of the computer or just living with the usage
It eats up my CPU and make my computer run slow, start ups take a LONG time. Is is safe to stop the Navapsvc.exe process on the Task Manager? If it is safe to end it's process,, then I will do it.
99% CPU are taken off by it. System crawl like snail.
After your program downloads the automatc protections updates, your norton antivirus starts a quickscan...disable this feature under norton options for antivirus and you should see a difference.
  The wizard  
More comments can be found here:
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Rating chart

Summary: Average user rating of navapsvc.exe: based on 111 votes with 9 reviews. 42 users think navapsvc.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 32 users think it's neither essential nor dangerous. 11 users suspect danger. 22 users think navapsvc.exe is dangerous and recommend removing it. 20 users don't grade navapsvc.exe ("not sure about it").

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Best practices for resolving navapsvc issues

A clean and tidy computer is the key requirement for avoiding problems with navapsvc. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the navapsvc.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

navapsvc.exe [all]