One of my co-worker had a problem regarding slow computer, he mention that his computer was slow and everything was just freezing. The first thing was to find the cause of the problem, he mention that whenever he opens Outlook 2003, everything would start to slow down. Luckily I was able to watch him reply a new message, I noticed that his email would freeze-up and the letters he typed did not appear right away.
Turning on the task manager show a 100% spike in CPU whenever replying or creating emails
The solution was to remove any additional add-in and do a detect and repair on Outlook 2003. The add-in outlook 2003 slows the system down, which explains why there is always a huge spike in CPU usage whenever a new email is opened.
Here are some other helpful Tips to speed up Outlook 2003:
# 1: Start Outlook in Safe Mode
======
1. Quit Outlook. Click Start menu, and click Run.
2. In the Open box, type: “Outlook /safe” (without the quotation marks).
Notes: There is a space character between Outlook and the forward slash (/).
3. Click OK.
4. Open an email. What is the result?
If it works fine, perform the following steps to fix the issue.
If it doesn’t work fine, you will need to do a detect and repair or reinstall outlook again.
#2 check addin registry keys
============
Exit Outlook.
Backup the registry then remove any outlook addin SUBkeys which are at the following locations:
HKCU\Software\Microsoft\Office\Outlook\Addins\
HKLM\Software\Microsoft\Office\Outlook\Addins
Start outlook to test the issue.
If the issue persists, go to next step.
#3 Rename the Cache Files
======
Search for the following four files and rename them by changing the file extension from “.dat” to “.old”. These four files are temporary
cache files that Outlook 2003 loads on startup. (Be sure to check the “Search hidden files and folders” box under “More advanced
options”)
outcmd.dat
extend.dat
frmcache.dat
views.dat
Generally the files can be located in the folder C:\Documents and Settings\<LogName>\Local Settings\Application Data\Microsoft
\Outlook\. Some of them may not exist, please ignore it.
Note: The folder is hidden by default. Please use the following method to show it:
1. From the Start menu, go to Settings–>Control Panel–>Folder Options.
2. Go to View tab and select “Show hidden files and folders”. The hidden folder will be shown then.
3. Start Outlook to see if the problem is resolved.
If the issue persists, go to next step.
#4 check nopreview
==========
Exit Outlook.
Click Start > Run > type “outlook /nopreview” (without the quotation marks). Click OK.
If it works fine, the issue is mostly caused by a corrupted message in the inbox folder. If the issue persists, let me know.
If anything is unclear or if you have any other concerns, please don’t hesitate to contact me.
There are three possible causes to the problem:
# Instant messenger. The fix is to disable the link to Instant Messenger on Outlook’s Tools, Options, Other tab.
# Network connectivity issues when you are using mapped network drives, including slow networks or inaccessible mapped drives. The fix is to uncheck the box for the dialog to always ask whether to open/save the attachments or disable mapped drives.
# Alternative input support in Office 2003. This allows you to use speech or handwriting instead of typing. Disable alternative input following instructions in How to turn off the speech recognition and the handwriting recognition features in Office 2003.
#5 Remove Outlook Addin Installer Programs
Start- Control Panel – Add or Remove Program – Outlook Addin Installer
*If you do not see one, move on to the next step
#6 Add or remove a COM add-in
1. On the Tools menu, click Options, and then click the Other tab.
2. Click Advanced Options, and then click COM Add-Ins.
3. Do any of the following:
* To enable an add-in, select the check box next to the add-in.
If the COM add-in you want is not listed, you need to add it to the Add-ins available list. Click Add, click the add-in (.exe or .dll file) you want, and then click OK.
* To disable an add-in, clear the check box next to the add-in.
To remove an add-in, clear the check box next to the add-in you want to remove, and then click Remove.
#7 Change the Security Zone of Outlook 2003
Outlook 2003 – Tools – Options- Security Setting- Change the Security Zone from Restricted sites to Internet
#8 Perform a detect and Repair
Outlook 2003 – Help – Detect and Repair
*Checks for any files that might be corrupted and replaces them.