explorer.exe very high RAM / Processor usage

There could be many reasons why explorer.exe consumes high amount or memory. This particular issue has been reported on Windows Vista and Windows Small Business Server 2008 machines and is caused by Windows Search functionality.

If you click on START and type anything in the "Start Search" box, explorer.exe RAM usage starts increasing. This doesn't stop even after Start menu is closed and eventually explorer.exe consumes pretty much all remaining RAM. Some users also report high CPU usage. Killing explorer.exe and starting it again fixes the problem until the next time search box is used.

To fix this:

Right click on Start > Properties > Start Menu - Customize.
Scroll down to Search files and select Don't search for files

Windows Small Business Server 2008 (SBS 2008)
Windows Vista

Find who is logged on onto remote computer

Find out who is logged on onto a remote computer locally or via resource shares

Download and extract PsLoggedOn. For more info about this Microsoft Sysinternals tool by Mark Russinovich and direct download go here.

Run PsLoggedon.exe in a command prompt (CMD):

PsLoggedon.exe
Find out who is logged on onto a local computer

PsLoggedon.exe \\computer-name
Find out who is logged on onto a remote computer

PsLoggedon.exe user.name
Find all computers where a user is logged on


To make it a bit more sophisticated on easier to use you can create a simple batch script which will prompt for computer (or user) name.

  • Create LoggedOn.bat and place in the same directory as PsLoggedon.exe
  • Place following code in LoggedOn.bat
    echo off
    SET /P PC=Please Enter Computer Name
    PsLoggedon.exe \\%PC%
    pause

  • Now when you run LoggedOn.bat, it will prompt for a Computer Name and return the result.

Outlook freezes trying to attach a file

MS Outlook freezes when trying to a attach a file. Delay sometimes can take as long as couple of minutes. Windows Explorer can also freeze at the same time.

This behaviour is most often caused by a Disconnected Network Drive or My Network Places shortcut pointing to non existing network location. Simply disconnect the old drive or delete offending shortcut and problem should be fixed.

If this doesn't help you can try deleting Temporary Internet Files and clearing Internet Explorer History.

MS Outlook 2003
MS Outlook 2007
MS Outlook 2010

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