How to remove msiexecs exe virus ?


One of my computer is running Windows Vista. I can not run internet browser(iexplore.exe) and firefox.exe today, because firefox.exe was tricked to point to c:\windows\system32\msiexecs.exe.

I manually deleted msiexecs.exe, when I ran firefox ( D:\program files\mozilla firefox\firefox.exe), my laptop told me it could not find firefox or iexplore.exe not found. If I changed firefox.exe to firefox11.exe and firefox ran just fine.What is msiexecs.exe? How do I get rid of msiexecs.exe virus? How to remove msiexecs.exe without internet explorer or firefox was effected?


Msiexec.exe (without the ‘s’) is a part of the Windows Installer component, which runs when your system installs new software, it is a legitimate Windows application. However, msiexecs.exe is not a legitimate software . So when the popup window came up for you to enter your administrator’s password to confirm running msiexecs.exe, please canceled it.In fact msiexecs.exe is a virus (adware or malware), it tricked your computer to not see firefox.exe (and iexplorer.exe). Even though the renamed firefox.exe(firefox111.exe) could works temporarily.

How to get rid of Msiexecs.exe virus (spyware,Trojan,worms) automatically and completely?

You will need to download and burn into cd several programs on clean PC or copy them to USB Disk to remove virus. Here is the instructions:
Step A:
copy the below programs to USB disk (you can use an MP3 player) or Burn them to CD :

  1. Avast Pro Antispyware software(Try, free of charge) .Please download with this Download Link.

free deleted msiexecs.exe

2.Wise PC Doctor:with this download link to restore damaged  registry values.

internet browser msiexecs.exe

You might want to download BitDefender Anti-Virus as alternate scanners. Though you are likely to be able to download them later on.

Step B: Restart your computer. At this point you need to gently Press the F8 key repeatedly when you find the startup menu, Select the option “ Safe Mode with Networking” by using the arrow key, then press Enter key on your keyboard , and your computer will start into Windows Safe Mode.

Step C: Now you need to install Avast Pro Antispyware on your computer, When the program is installed, your need update its database to the latest, then reboot your computer to make the program fully functional, Go Step B to reboot your computer into Safe Mode and do a complete scan for your computer .


(1)In case you have some problems running Avast Pro Antispyware, you may rename the downloaded file’s name to explorer.exe or iexplore.exe. After that double click the download file and follow the install steps .

(2) Please make file extension show before renaming download file.

Step D: After finish the full scan, click "Show Results" and be sure that the important data aren’t removed and infected. Select or ignore the scan result and click "Remove Selected" button to get rid of the virus and malwares. Avast Pro Antispyware will give you a report to indicate all operations for this scan. It can be saved as you want. Restart your computer and the Avast Pro Antispyware will get rid of all virus or malwares which are detected before.

Step E: How to erase bad registry? Please install Wise PC Doctor– the best PC cleaner can easily fix your broken registry values and restore registry values.

Why Wise PC Doctor should be used ?

As we all know, virus, Trojans and Malwares make the computer breakdown by destroying and modifying the registry values so that the computer will not run normally.

After the virus, Trojans and Malwares are removed, the registry remains to be destroyed or modified, therefore the computer’s system still has some problems. That’s why you really need to fix the registry. Furthermore, some virus, Malwares and Trojans leave many dll data in the registry and this may cause damaged DLL errors and also have an effect on the computer’s system performance.

In any other case Uninstall or install software may make your registry database fragmented, with corrupted, harmful and obsolete files. Do a complete scan for your computer by Wise PC Doctor at this moment.

Step F: Run Wise PC Doctor to repair your computer:

1. Install Wise PC Doctor.

2. Click "One-Click Fix", do a complete scan for your computer.

3., Click “Repair All” then fix all detected problems.

Following the easy steps above, your computer will run much faster than before.

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