MSASCui.exe is not a valid Win32 application

**Vishal Singh** · 03-02-2009

Hello

I am new on the forum and I have a little concern when I try to change the startup programs in Windows Vista. I get an error message that appears "MSASCui.exe is not a valid Win32 application."

I also had some trouble lately with my anitivirus I could reinstall (not a valid Win32 application), and with my wireless network card.

It seems that the virus bagle but I can not get rid of.

Someone would have a little tmeps to devote myself to overcome it?

Thank you in advance

**Barclay** · 03-02-2009

Try this workaround:

1. Remove the current signature file. To do this, click Start, click Run, type
Msiexec /x {A5CC2A09-E9D3-49EC-923D-03874BBD4C2C}
and then click OK.
2. Open Windows Defender. To do this, click Start, click Programs,
and then click Windows Defender.
3. Check for new definitions. To do this, click the Help options arrow next
to the Windows Defender Help icon, click About Windows Defender, and
then click Check for Updates.

Windows Defender definitions have been updated
http://support.microsoft.com/Default.aspx?kbid=915105

**CoModO** · 03-02-2009

To clear infected Windows Vista System Restore points:

1. Click Start.
2. Right-click the Computer icon, and then click Properties.
3. Click on System Protection under the Tasks column on the left side
4. Click on Continue on the "User Account Control" window that pops up
5. Under the System Protection tab, find Available Disks
6. Uncheck the box for any drive you wish to disable system restore on
7. When turning off System Restore, the existing restore points will be deleted. Click "Turn System Restore Off" on the popup window to do this.
8. Click OK

Now turn on Windows Vista System Restore:

1. Click Start.
2. Right-click the Computer icon, and then click Properties.
3. Click on System Protection under the Tasks column on the left side
4. Click on Continue on the "User Account Control" window that pops up
5. Under the System Protection tab, find Available Disks
6. Place a checkmark in the box for any drive you wish to enable System Restore on
7. Click OK

**MrChris-** · 09-06-2009

While you are using Windows Defender, you may get different error_code that The most common error codes are 0x8024402f or 0x80240016. However, you might receive a different error code, such as one of the following: