The computer responds as if you double-clicked the mouse button when you try to single-click a Microsoft mouse button

When you try to single-click a Microsoft mouse button, the computer responds as if you double-clicked the mouse button.

This problem may occur for the following reasons:

• You assume that you are performing a single physical click, when in fact, you are performing multiple clicks.
• The mouse settings have been modified, either manually or by another program, to send a multiple-click command when you perform a single physical click.
• The mouse drivers are corrupted.
• The mouse hardware is defective.

To isolate the problem, use the following methods in the order that they appear in.

Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.

Method 1: Verify your clicking method

Make sure that you are performing a true single physical click. A single-click occurs when you press and release a mouse button one time.

Method 2: Test the mouse in multiple programs

Close all programs and test for the problem on the desktop and in other components of Microsoft Windows, such as Control Panel or Microsoft Windows Explorer.

If the problem only occurs in a particular program, troubleshoot that program. The program is most likely customizing the mouse commands.

Method 3: Test the mouse in safe mode

If the computer is running Microsoft Windows NT, go to method 4.

Windows Vista

1. Click Start
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   , click the arrow next to the Lock button, and then click Restart.
2. Use one of the following methods:
   • If the computer has a single operating system installed, repeatedly press the F8 key as the computer restarts. You must press F8 before the Windows logo appears. If the Windows logo appears, you must try again.
   • If the computer has more than one operating system, use the arrow keys to highlight the operating system that you want to start in safe mode, and then press F8.
3. On the Advanced Boot Options screen, use the arrow keys to highlight the safe mode option you want, and then press ENTER.
4. Test the mouse.
5. To leave safe mode, restart the computer and let it start in Normal mode.

Microsoft Windows XP

To start Windows XP in safe mode, follow these steps:

1. Click Start, click Shut Down, and then click Shut Down in the drop-down list.
2. In the Shut Down Windows dialog box, click Restart, and then click OK.
3. When you receive the following message, press the F8 key:
   Please select the operating system to start
4. Use the arrow keys to select the appropriate safe mode option, and then press ENTER.
5. If you have a dual-boot or multiple-boot system, select the installation that you have to access by using the arrow keys, and then press ENTER.
6. Test the mouse.
7. To leave safe mode, restart the computer and let it start in Normal mode.

Microsoft Windows Millennium Edition, Microsoft Windows 98, and Microsoft Windows 95

To test the mouse in safe mode, follow these steps:

1. Restart the computer.
2. Immediately after the Power On Self Test (POST) beep, press F8 to display the Windows Startup Menu.
   
   Note The POST-beep is the single, short beep typically emitted as a computer starts. If you are not sure when to press F8, press this key every three seconds as the computer is starting. In Windows 98 or Windows Millennium Edition, you can also hold down the left CTRL key as the system is starting.
3. Press 3, and then press ENTER.
4. When you see the dialog box that states that you are running in safe mode, click OK.
5. Test the mouse.
6. To leave safe mode, restart the computer and let it start in Normal mode.

Note Certain programs and devices do not work in safe mode.

If the problem occurs in safe mode, continue to method 5.

If the problem does not occur in Safe mode, there is a software anomaly; go to method 4.

Method 4: Troubleshoot your software

Check your mouse properties settings in Microsoft Windows

Make sure that Double-click or ClickSaver is not enabled. To do this, follow these steps:

1. Open the Mouse Properties dialog box. To do this, use one of the following methods:
   • In Windows Vista, click Start
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     , type Mouse in the Start Search box, and then click Mouse in the Programs list.
     
     
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     If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
   • In Windows XP, click Start, click Run, type main.cpl, and then click OK.
2. Use the appropriate method for your version of IntelliPoint software.

   Version 2.2 or earlier

   On the StepSavers tab, click to clear the ClickSaver check box.

   Version 3.0 or a later version

   On the Buttons tab, under Button Assignment, make sure that the Left button setting is Click (default), and not Double-click.
3. Click OK.

Check your desktop configurations

The operating system may support different desktop configurations (styles) that assign specific functions to your mouse-click commands. If the Web style configuration is currently enabled, a single physical click may be processed as a double-click. To verify this configuration, follow the appropriate steps for the operating system that you are using.

Windows Vista

1. Click Start
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   , type Appearance and Personalization in the Start Search box, and then click Appearance and Personalization in the Programs list.
   
   
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   If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
2. In Appearance and Personalization, click Folder Options.
3. On the General tab, click Double-click to open an item.

Windows XP

1. Double-click My Computer.
2. On the Tools menu, click Folder Options.
3. On the General tab, make sure that Double-click to open an item (single click to select) is selected.
4. Click Apply to save your settings change.
5. Click OK.
6. Close the My Computer dialog box.

Windows Millennium Edition

1. Double-click My Computer.
2. On the Tools menu, click Folder Options.
3. Under Click items as follows, click Double-click to open an item (single-click to select).
4. Click Apply to save your settings change.
5. Click OK.
6. Close the My Computer dialog box.

Windows 98, Windows 95, and Microsoft Windows NT

1. Double-click My Computer.
2. On the View menu, click Options or click Folder Options.
3. On the General tab, if Web Style is selected, click Classic Style.
4. Click Apply to save your settings change.
5. Click OK.
6. Close the My Computer dialog box.

Close all background programs

In Microsoft Windows operating systems, remove memory-resident programs and other software that is loaded in the startup environment. The best way to do this is to perform a clean boot procedure. For more information about how to clean boot your version of Windows, click the following article numbers to view the articles in the Microsoft Knowledge Base:

Remove and then reinstall the mouse drivers

Note In Windows 95, Windows 98, and Windows Millennium Edition, follow these steps in safe mode. See Method 3 for information about how to go into safe mode.

Remove the IntelliPoint Software

Windows Vista

1. Click Start
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   , type Add or Remove Programs in the Start Search box, and then click Add or Remove Programs in the Programs list.
   
   
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   If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
2. Click Microsoft Intellipoint, click Change, and then click Remove.

Windows XP and earlier versions

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Add or Remove Programs.
3. Double-click Microsoft IntelliPoint.
4. Use the appropriate method for your version of IntelliPoint software.

   In version 2.2 or earlier

   1. Click Finish, and then click Close.
   2. Click Restart Windows.

   In version 3.0 or a later version

   1. Click Delete all files, and then click OK.
   2. Click Yes, I want to restart my computer now, and then click Finish.

Reinstall the IntelliPoint software

1. Insert the IntelliPoint software disk.
2. For Windows Vista:
   1. Click Start
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      , click All Programs, click Accessories, and then click Run.
   2. Type drive:setup.exe and then click OK. In this command, drive is the letter of the drive where the Intellipoint software disk is located.
   For Windows XP and earlier versions:
   1. Click Start, click Run, type drive:\setup.exe in the Open box, and then click OK.In this command, drive is the letter of the drive where the Intellipoint software disk is located.
3. Follow the instructions for the installation process.
4. Restart the computer when you are prompted.

Reset the mouse buttons to their defaults

Note The following steps are for IntelliPoint software version 3.0 or later. You can download the latest IntelliPoint software at the following Microsoft Web site:

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Mouse.
3. On the Buttons tab, click Use Defaults.
   
   Note If Use Defaults is not available, all your button assignments are already set to default mode.
4. Click OK.

Test the mouse in its diagnostic software

Note Mousinfo is included with IntelliPoint software version 3.0 or later.

1. Start Mousinfo.
   • For Windows Vista:
     1. Click Start
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        , click All Programs, click Accessories, and then click Run.
     2. In the Open box, type mousinfo, and then click OK.
   • For Windows XP and earlier versions, click Start, click Run, type mousinfo in the Open box, and then click OK.
2. Click the left mouse button.
   
   Under Last Mouse Message, WM_LBUTTONUP or WM_LBUTTONDLCLK appears for the double-click message.
   
   Note If the message does not appear when you click the left button, your mouse may be defective. See method 6.
3. On the File menu, click Exit to close Mousinfo.

Method 5: Check mouse hardware and try swapping mouse ports if possible

Shut down the computer. Verify that the mouse cable is not damaged and that the pins on the end connector are not bent. Remove any mouse extension cables. If possible, try the mouse in a different port. Turn on your computer and retest.

Method 6: Test the mouse on another computer or test a different mouse on the computer

To determine whether the mouse or the computer is defective, follow these steps:

1. Test the mouse in question on a system that you know is working. If the problem appears to follow the mouse, you may have to return or replace the mouse.
2. Test a mouse that you know is working on the computer in question. If the problem appears to remain on the computer, then the problem is most likely software-related.

To learn about how to change the mouse settings in Windows Vista, follow the instructions in the "Change mouse settings" topic in Windows Vista Help and Support. To view the topic, follow these steps:

1. Click Start
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   , and then click Help and Support.
2. In the Search Help box, type Change mouse settings, and then click Search Help.
3. Click the appropriate topic.

To learn about how to start a computer in safe mode in Windows Vista, follow the instructions in the "Start your computer in safe mode" topic in Windows Vista Help and Support. To view the topic, follow these steps:

1. Click Start
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   , and then click Help and Support.
2. In the Search Help box, type Start your computer in safe mode, and then click Search Help.
3. Click the appropriate topic.

To learn about how to change folder options in Windows Vista, follow the instructions in the "Change folder views and behavior" topic in Windows Vista Help and Support. To view the topic, follow these steps:

1. Click Start
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   , and then click Help and Support.
2. In the Search Help box, type Change folder views and behavior, and then click Search Help.
3. Click the appropriate topic.