It protects you from sites that may contain malware or trying to do phishing scams. It may alert you against websites that might steal your information or data. It also provides Risk Ratings of websites by using McAfee’s threat database. It is located in the installation directory of McAfee, usually, the following:
How to Fix Applications Errors of UiHost.exe
Firstly, we will try to update the Web Advisor and if that fails, we will reinstall the McAfee Security Suite.
1. Update the McAfee Web Advisor
If McAfee’s Web Advisor is outdated, it will not be compatible with your browser or system and it will result in the Application Errors under discussion. This can be solved by updating the McAfee Web Advisor to the latest build. To update the Web Advisor on Firefox, follow the steps below:
2. Update the Browser
You will face UiHost Application Errors if the browser is outdated. This will make the browser incompatible with the Web Advisor. This can be fixed by updating the browser. To update Chrome:
3. Clean Boot Your System
If another application or service on your system is hindering the operation of the Web Advisor, the extension may crash in the execution and thus show the UiHost errors. In such a case, clean booting your system will do the trick.
4. Disable Other Browser Extensions
The Web Advisor extension will show application errors if another extension is not compatible with it. Here, disabling other browser extensions will solve the problem. To do so on Chrome:
5. Scan Your System
As the UiHost.exe file is a part of the security suite and if malware is trying to bypass it, then it can cause issues such as Application Errors. To overcome this, scan your system.
6. Check UiHost.exe File
As the file is crashing, let’s make sure that the file is a genuine McAfee file or is replaced by malware.
7. Reinstall the McAfee Security Suite
You will get UiHost application errors on the Web Advisor if the installation of the McAfee Security Suite itself is damaged. Here, reinstalling the McAfee Security Suite will solve the problem. To uninstall McAfee Suite on a Windows PC:
8. Reset or Reinstall Windows
If none of the above works, you may reset your PC to defaults or perform a clean installation of Windows on your system. Make sure to scan your system afterward. Reinstall the McAfee Security Suite and hopefully, that will permanently clear the issue. If the issue persists, contact McAfee Support.






