Troubleshoot Error Message in 'OUTLLIB.DLL' File in MS Outlook

Outllib.dll is MS Outlook modules that resolve internal issues like user getting two dial-up connections while accessing remote mail in an Exchange Server, correctly displaying customized types for a .msg file, turning off the option of using comma as separator. Outllib.dll has folders that use ReplytoAll command and help in repair. Outllib.dll corrects errors but it can itself get affected by errors. 

In this article we will discuss an error situation when Outlook causes an invalid page fault in module Outllib.dll. Several solutions are given. Perform each solution one by one until the problem is resolved.

Disable the Extensions:

Incompatible or invalid extension information can create problems in MS Outlook. To fix, extension problems, follow the underlying steps…….

•If Outlook is not Starting: 

Outlook caches extension information gathered from the Windows registry in Extend.dat file. To resolve the issue, refresh this file. Open folder C: \Documents and Settings \Administrator \Local Settings \Application Data \Microsoft \Outlook in your system. Extend.dat file is located here by default. Rename it to Extend.cat. Restart Outlook to see if the solution worked.  

•If Outlook is starting: 

If you are able to start Outlook, start Outlook and on the Tools menu, click Options. On the General tab, click Add-in Manager. In the Add-in list, click to select the add-in you suspect and click to clear the add-in check box. And click OK twice to close the dialog.

Create a New Profile:

To create a new profile, follow these steps:

1. Open Control Panel from Start menu.

2. Double-click the Mail icon. Mail control opens.

3. On the Services tab, click Show Profiles.

4. Click Add. Inbox Setup Wizard starts.

5. Set default to "Use the following information services."

6. Clear all services except the one that is fixed.

7. Click Next then Type name for the new profile in Profile Name box

8. Follow the steps in the Inbox Setup Wizard

Refresh the Outllib.dll File:

Outllib.dll contains the data from registry. In case of error to refresh the file, copy it again from the original disc from where you installed the MS Office program. Before pasting the file from setup disc, rename the current one to some other name. Default location of Outllib.dll is “C:\Program Files\Microsoft Office\Office” Paste the file from the disc to this folder. Start Outlook after doing this.

Remove and Reinstall Windows Messaging:

To remove and re-install, Windows Messaging and Outlook files,  

1. Remove Windows Messaging and Outlook by help of Add remove programs in Control Panel.

2. Re-install Windows Messaging. 

Follow the underlying steps to do this…..

1. Open Control Panel from Start menu.

2. In Control Panel, click Add/Remove Programs icon to open it.

3. Click the Windows Setup tab.

4. Select Windows Messaging.

5. Click OK to install the files.

3. Reinstall Outlook.

You can also try running the Switch Forms utility to register the Outlook forms again, or starting the computer in Safe Mode to disable some programs that may be causing problems.