Reply: This is not necessarily the case. Sometimes replacing the old or new version of the file with the current file will also make the software work. The original intention of creating this website is to solve the problem that the software can not run due to file loss or damage. If your software is running normally, I suggest you not to replace any current files. If your software doesn't work, and you can be sure that there is something wrong with the sihost.exe file, try using a different version of the sihost.exe file and remember to back up the old file before overwriting the file.

Reply: Sihost.exe is a Windows shell-related program, such as the graphical processing interface we see, etc. If this file is lost or damaged, it will return to the string command interface, which is the DOS interface, just like the following picture:



In addition, damage to the sihost.exe file may also result in a blue screen on the system.

To fix this problem, you can only find a complete file to replace the damaged file.

However, if you say that both explorer.exe and sihost.exe have problems at the same time, then I can be sure that your system is infected by a virus, because these two files are most easily injected or modified by the virus, so it is best to find an anti-virus software to remove the virus from the system.