MMC recovery and window of the world browser

I found a solution on the Internet and reprinted it as follows: Q: When I want to open the Device Manager in "System Properties", the message "MMC cannot open the file c: \ windows \ system32 \ devmgmt. MSC. This may be because the file does not exist, it is not an MMC console, or it was created using a later version of MMC. It may also be because you do not have sufficient permissions to access this file ". But I log on as an administrator. What is the cause? A: ① first check devmgmt in the system. whether the msc file is damaged or lost: Enter the c: \ windows \ system32 directory to check whether devmgmt exists. MSC file. If the file cannot be found, or the file destruction information appears after you click it, click "run" in the "Start" menu and enter SFC/scannow, the system will check whether the system file is damaged and repair the system file. In this process, you need to add the Windows XP installation CD. After the check is complete, restart it; in addition, you can try to copy this file from another computer with the same operating system and put it in the corresponding directory to see if it can be solved. If the problem persists, you can try to use Windows XP to install the CD to repair the system. ② Because the file suffixed with MSC is actually in XML format, it requires MSXML parser Program So that the system can identify the issue. If this problem occurs, you can register MSXML parser again to check whether the problem can be solved by entering "regsvr32 C: \ windows \ system32 \ msxml3.dll ", and press Enter.
Note: There are many such system application files in the System32 directory of windows, such as dfrg. MSC is a built-in disk fragment tool, secpol. MSC is the Local Security Policy for calling the system, compmgmt. MSC is the computer management of the system. If "MMC cannot open the *** file. This may be because the file does not exist, not an MMC console ......" Information, you can use the Windows File Protection Function of the system's built-in System File Checker to check and fix.
Note: This problem may occur because the system is infected with a virus (corresponding error message: the file does not exist, not an MMC console) or a Trojan (corresponding error message: you are not authorized to access this file ). We recommend that you use the latest anti-virus software to fully check the system to prevent the virus from damaging or deleting the file again. In addition, ie, which has been plagued by MSN's frame 2003, has very high security requirements, so it is impossible to download plug-ins. On the other hand, Firefox encountered the same problem, blocking all Java, pop window is a bit like a super security anti-theft door thief, it may not be able to defend itself, but it cannot be out ~~~ The windows browser downloaded from xdowns should be based on the IE kernel. In short, it is very small and free of installation. Why not?