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Unable to open, repair or uninstall McAfee Security Centre

Hi, I am using McAfee Security Centre with Windows Vista and have come across an issue where I can no longer open the main McAfee window.  Instead, I get a blank white screen where the welcome screen would normally appear.  Only by using task manager can I close this.

If I try to uninstall or repair MSC using control panel / programs and features, I get the same white screen and again have to use task manager to close it.

It appears to be causing a problem where I am unable to access any sites that require login (hotmail, aol etc) in Internet Explorer (however is okay in Chrome)

Can anyone help?

I have tried downloading McAfee Virtual Technician but this crashes in a similar fashion, with just the MVT heading at the top of a window.

1 Reply

Re: Unable to open, repair or uninstall McAfee Security Centre

You have either javascript corruption or a non-standard font is causing this.

There is  FAQ listed in the second to last line in my signature below but in case that comes up blank here is what it says...5 steps to cure the blank window issue, usually #1 does it.

SecurityCenter fails to open, displays a blank white screen, or displays a Java error


Affected Suites:
McAfee Total Protection
McAfee Internet Security Suite
McAfee AntiVirus Plus

Affected Products:

Affected Operating Systems:
Microsoft Windows 8
Microsoft Windows 7
Microsoft Windows Vista
Microsoft Windows XP


McAfee SecurityCenter it fails to open, opens to a blank white screen, or you see a Java error. Other applications on your system might have the same issue.


This issue is often caused by problems with your Windows operating system. System files depend on one another to provide full functionality. If some of these components fail to register, for example, these interdependencies will fail to function.

Solution 1

If McAfee SecurityCenter displays a blank screen, it might be caused by an incorrect registry key that references jscript. Perform the following steps to download and run the script that fixes this.

  1. Save any work. The script will ask you to reboot your computer when it completes.
  2. Click the following link and save the file to your desktop:
  3. Unzip the file you downloaded and save mcscriptfix.bat to your Desktop.
  4. Right-click mcscriptfix.bat and select Run as Administrator.
  5. Click Yes in the User Account Control box, if prompted.
        While this script runs, a black DOS Prompt window will open on your screen.
  6. When you are prompted to Press any key to continue in the DOS Prompt window, click inside the window and press any key.
  7. Restart your computer.

Solution 2

Restarting your computer frequently resolves these types of issues, but deeper troubleshooting might be required. Perform each of the following solutions in order, then verify the issue is resolved. If your issue is resolved, you can stop there. If your issue persists, continue to the next solution.

Verify Java is installed and up-to-date

  1. Close any open applications and restart your computer.
  2. Click Start and select the Search box.
  3. Type Programs and Features.
  4. Open Programs and Features.
  5. Locate Java in the list of installed programs.
    • If Java is listed, click Start and select the Search box.
    • If Java is not present, install it from
    • If you find multiple versions of Java installed, remove all versions, restart your computer, then install Java again.
  6. Type Control Panel.
  7. Double-click the Java icon.
  8. Click the Update tab.
  9. Click Update Now.

If the update tells you that you have the most current version, close the Java control panel and proceed to the next solution. If the update runs, restart your computer and try opening SecurityCenter again. If you still cannot view the SecurityCenter, proceed to the next solution.

Solution 3

Download and run the McAfee PreInstall Tool

  1. Go to, and save the McPreInstall file to your desktop.
  2. Double-click McPreInstall.exe.
  3. Click Start inside the Preinstall Tool.
  4. Read the warning message and click OK to agree to the changes.
  5. After the preinstall tool completes, click OK.
  6. Click Close and restart your computer.

Open SecurityCenter. If you are still unable to see the SecurityCenter screens, continue to the next solution .

Solution 4

Uninstall and reinstall your McAfee Security product using the procedure in article TS101331.

Solution 5

If you still cannot see SecurityCenter screens correctly after completing all of the previous solutions you might have an operating system problem. Perform the following steps and make a note of any errors you receive.

  1. Click Start and select the Search box.
  2. Type the following command and press ENTER:
  3. Right-click command and select Open as Administrator.
  4. Type each of the following commands and press ENTER after each one. After each command has run, you will see a success or failure message:
    • regsvr32 scrrun.dll
    • regsvr32 jscript.dll
    • regsvr32 vbscript.dll
    • Additional for Internet Explorer 9 Users:
              regsvr32 jscript9.dll

Open SecurityCenter again.  If you still cannot see the SecurityCenter screens, contact your computer manufacturer with these errors for additional assistance.

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