This message appears when your Operating System needs to be launched again in order to implement updates for the components of your Trend Micro security software.

To resolve this issue, refer to this Knowledge Base article for complete instructions:
"Restart Required" message appears when installing updates for your Trend Micro Security software

To resolve this issue, refer to this Knowledge Base article for complete instructions: [Hotfix] Trend Micro System Tray icon stuck at "Now Scanning"

You are getting this message due to the following possible scenarios:

• The computer affected has been removed from your subscription license.
• There are conflicting software installed on your computer.
• There are Potentially Unwanted Applications (PUA) and/or malware on your computer.
• The program failed to download and install updates.

To resolve this issue, do the steps below:

Turn off Trend Micro from the System Tray

To disable your Trend Micro program, follow the steps below:

1. Right-click the Trend Micro icon from the System Tray.

   If you do not see the Trend Micro icon from the System Tray, click the arrow button to show the rest of the icons.

   

2. Select Exit.
3. Wait for Trend Micro's System Tray icon to disappear. Once the icon disappears, Trend Micro is now disabled.
4. Wait for 30 seconds.

Enable Trend Micro Security

To enable your Trend Micro Security program, follow the steps below:

1. Choose how to open the program by following these steps depending on your Windows Operating System:
   Windows 10

   To open your Trend Micro Security, double-click the Trend Micro  icon on your desktop or on your system tray.

   

   Windows 8/8.1

   To open your Trend Micro Security, click the Trend Micro  icon on the Windows Start screen.

   

   Windows 7

   To open the main console of your Trend Micro program, do any of the following:

   • Double-click the Trend Micro  icon on your desktop.

     

   • Double-click the Trend Micro  icon on your system tray.

     

   • Click Start > Programs or All Programs > Trend Micro then choose either:
     • Trend Micro Antivirus+ Security
     • Trend Micro Internet Security
     • Trend Micro Maximum Security
2. Run a scan.

If the issue persists after restarting the components of your Trend Micro program, refer to this Knowledge Base article: "Protection Disabled" error message appears when opening the main console of your Trend Micro Security program.

You can experience this due to the following scenarios:

• Conflicting third-party security software
• Virus infection
• Trend Micro Security software is running in compatibility mode
• Missing path variable in Windows

To resolve the issue, follow the steps below:

Uninstall Conflicting Software

Having third-party security software or older Trend Micro programs installed on your computer may lead to installation and performance issues. To remove these programs and their components, follow the steps below:

1. Download, then run Control Panel.
2. Click Yes when the User Account Control window appears.
3. Select the program you need to remove, then click Remove or Uninstall.
4. Wait for the program to be uninstalled, then restart your computer when asked.
   For the complete list of third-party security software and instructions on how to remove them, check this Knowledge Base article: Programs to remove before installing Trend Micro Security.

   Note: If you encounter issues in uninstalling the third-party security software, contact the software manufacturer for assistance.

Run HouseCall to check for virus infection

Run Housecall to scan your computer from malware. For complete instructions, refer to this Knowledge Base article: Scanning your computer using Trend Micro HouseCall (For Home Users).

Visit the HouseCall page for more information on this free product.

If the issue persists, refer to this Knowledge Base article: Unable to open the main console of Trend Micro Security.

Your Trend Micro Security program scan will not complete or finish and you cannot shut it off. This problem is caused by either of the following:

• High CPU usage
• The current file being scanned is locked or corrupted

To resolve the issue, restart the scan process. To do this, refer to the steps below:

1. On your keyboard, press the CTRL + SHIFT + ESC keys simultaneously.
   This will open the Task Manager window.
2. Select Quick/Full Scan in Progress in the Task Manager under the Applications tab, then click End Task.
3. Click End Now when a warning window says "This program is not responding".
   If the scan does not stop, do the following:
   1. Click the Processes tab on the Task Manager.
   2. Select any instance of uiWinMgr.exe, then click End Process.
4. Restart your computer, then run a scan again.
5. Check if the scan will finish.

If the scan still hangs or stops after performing all the steps above, refer to this Knowledge Base article: Scan does not finish and you cannot turn off Trend Micro Security software.

You are getting this message due to failure of receiving Trend Micro program updates.

To resolve this issue, follow the steps below:

1. Check the internet connection of your computer if it is properly connected.
2. Update your program by clicking the Update Now button.

If the issue persists, refer to this Knowledge Base article: "Connect to the Internet" error message appears when opening the main console of your Trend Micro Security program.

The CoreServiceShell.exe is your Trend Micro program's main process. It takes up 40 MB to 200 MB of memory in a normal computer state or environment. If the consumed memory is higher than 200 MB and does not go back to normal for about 5 to 10 minutes, remove conflicting softwares installed on your computer.

To remove these programs and their components, follow the steps below:

1. Download, then run Control Panel.
2. Click Yes when the User Account Control window appears.
3. Select the program you need to remove, then click Remove or Uninstall.
4. Wait for the program to be uninstalled, then restart your computer when asked.
   For the complete list of third-party security software and instructions on how to remove them, check this Knowledge Base article: Programs to remove before installing Trend Micro Security.

   Note: If you encounter issues in uninstalling the third-party security software, contact the software manufacturer for assistance.

If the issue persists, check this Knowledge Base article for solution: Slow pc performance due to high CPU or memory usage of CoreServiceShell.exe.