What is atnthost.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 atnthost.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.

Click to Run a Free Scan for atnthost.exe related errors

Atnthost.exe file information

The process known as atnthost belongs to software WebEx or AT Host Service or Microsoft Data Access by WebEx (

Description: Atnthost.exe is not essential for Windows and will often cause problems. The file atnthost.exe is located in a subfolder of C:\Windows or sometimes in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 30,720 bytes (50% of all occurrences), 45,056 bytes or 32,768 bytes. 
The software has no file description. The program has no visible window. It is an unknown file in the Windows folder. The atnthost.exe file is not a Windows core file. Therefore the technical security rating is 55% dangerous; however you should also read the user reviews.

Recommended: Identify atnthost.exe related errors

Important: Some malware camouflages itself as atnthost.exe. Therefore, you should check the atnthost.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

It's Like GoToMyPC except free. It allows you to download and upload files without logging in.
Shouldn't be installed on your PC unless you did yourself!

Summary: Average user rating of atnthost.exe: based on 2 votes with 2 user comments. One user thinks it's neither essential nor dangerous. One user suspects danger.

Do you have additional information? Help other users!
What do you know about atnthost.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving atnthost issues

A clean and tidy computer is the key requirement for avoiding problems with atnthost. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the atnthost.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

atnthost.exe [all]