Method 1: Install every Pending Update According to the official Microsoft support team, this problem can also be related to a Windows Update issue that got triggered after a bad update was installed on a Windows 10 installation that was previously upgraded from Windows 8.1.
Method 2: Performing SFC and DISM Scans
Method 3: Using System Restore
Method 4: Resetting every Windows Component
Over the past few years, hundreds of Windows 10 users have encountered “sihost.exe unknown hardware error” while using Cortana or after installing Windows updates. After analyzing detailed user reports and articles about the program, it can be concluded that the exact sihost.exe warning system error may be caused more by recent changes in technology.
The unknown error usually occurs due to infected system files, registry blog entries, malware, and some Windows enhancements (for users). Of course, this single mistake can lead to malfunctions or very serious accidents; Your system and data are usually in great danger. How to fix unknown complex ctfmon exe error?
Corrupted operating system installation. In more serious cases, you should expect the error to appear in a situation where you are dealing with corruption affecting important operating system files used during startup. In this case, your real hope of fixing problems without reinstalling is to go for a repair install (on-site repair).
How do I fix Sihost exe system warning unknown hard error?
To fix the sihost.exe error, you can try uninstalling or removing newly installed features. If one doesn’t want to delete them one by one, performing a system restore is actually a good choice. In this way, your Windows will be restored to an earlier state where many did not find errors.
Why do I get unknown hard error on sihost.exe?
The sihost.exe archive is an important software component of Microsoft Windows. It is an integral part of the shell infrastructure host and should not be removed. Over the past years of research, many Windows 10 users have encountered an unknown sihost.exe fatal error while using Cortana Gold after installing Windows Updates.
What causes unknown hard error in sihost.exe?
Some of the possible causes of the Sihost.exe unknown hardware error are: 1 Corruption of program files 2 Accidental or malicious deletion of saved data associated with the shell infrastructure host 3 Windows update failure 4 Virus infection or malware
How do I fix Sihost EXE unknown error?
To fix the new sihost.exe fatal error, you can first determine if a particular third-party software is causing the problem. You can sign in to Windows 10 as an administrator and then hard reset your primary computer.

I’m a writer for uscfr.com. In my opinion, technology should make our lives easier, not more complicated. That’s why I enjoy breaking down complex topics and explaining them in a way that everyone can understand. In my free time, I can be found tinkering with new devices or coding up new apps.