What does the McChHost.exe file do?
The McChHost.exe process is also known as SiteAdvisor and is a part of McAfee WebAdvisor or, as the case may be, McAfee SiteAdvisor. This software is produced by McAfee (www.mcafee.com). An outdated or faulty version of McChHost.exe can cause problems for your computer, ranging from slowness to error messages like these:
- SiteAdvisor has stopped working. Windows is checking for a solution to the problem... (Windows 11, 10, 7)
- SiteAdvisor has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 11, 10, 7)
- McChHost.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module McChHost.exe. Read of address 00000000.
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What you should know about McChHost.exe SiteAdvisor
McChHost.exe is not part of Windows, but it is important nonetheless. The file McChHost.exe is found in a subdirectory of "C:\Program Files".
Frequently occurring are file sizes such as 389,160 bytes (16% of all these files), 398,600 bytes as well as 4 other variants.
The program executes in the background, and can only be terminated using Windows Task Manager. The original file is digitally signed. Check your file. The McChHost file is not part of the Windows operating system. The original file has been signed by a trusted signature authority. This lets you check your copy to see if it is a counterfeit.
For this reason, 5% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves McChHost.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.
What do other computer users say about McChHost?
The file spreads very slowly and does not often make an appearance. Therefore, feedback from other users is not yet available.
Summary: source: file.net
How to uninstall McAfee WebAdvisor or McAfee SiteAdvisor
To remove SiteAdvisor from your computer, please follow the manual instructions below.
- Click the Windows Start Button. You can find it in the lower-left corner of the taskbar.
- Type 'uninstall'.
- Click Add or remove programs.
- Now locate McAfee WebAdvisor or McAfee SiteAdvisor in the list of displayed applications.
- Click the program, and then click Uninstall.


How to check if McChHost.exe (SiteAdvisor) was uninstalled completely
After uninstalling, restart your computer. Then open Windows Explorer and check if a folder with the software name still exists under C:\Program Files. Also, check the Registry for remnants of SiteAdvisor. To do this, start Regedit, then look under HKEY_LOCAL_MACHINE > Software for: SiteAdvisor or the name of the producer. Keep in mind that only a computer professional should delete entries in the Windows Registry directly.
Last but not least
If Windows is not working properly, startup is slow, or McChHost.exe is causing problems, a good Windows diagnostic tool may help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.
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