MMC(mmc) не может открыть файл …
http://olann.org.ru/page/mmc-ne-mozhet-otkryt-fajl-compmgmtmsc MMC cannot open the file C:\WINDOWS\system32\compmgmt.msc. This may be because the file does not exist, is not an MMC console, or was created by a later version of MMC. This may also be because you donot have sufficient access rights to the file. cmd > regsvr32 c:\windows\system32\msxml3.dll
Не открываться оснастка mmc
Не открывалась mmc,compmanager , переустановка .net спасла