Microsoft Outlook Will Not Close Properly – Error Resolved

Many users of Microsoft Outlook might have seen a very common error on the screen “Microsoft Outlook Will Not Close Properly”. The main cause behind this error is some set of plug-ins and other program with Outlook. Hence if people attempts to close the Outlook, it shows an error messages on the screen ”Outlook.exe does not close itself”. In this blog, we will discuss about what’s the common reason behind this error and how to resolve this type of error messages.

What’s the cause behind “Microsoft Outlook Will Not Close Properly” error ?

1. If your NK2 file is corrupted (it’s a file which usually stores the Autocomplete cache). If this file is corrupted then Outlook does not close itself.

2. Error while running Inbox repair tool “The data file was not closed properly” .

3. If there is any constant visibility of Outlook icon in notification area or you want to move on different profile.

4. If there is corruption in navigation pane. It can be resolved by using “outlook.exe /resetnavpane” command.

Let’s See How to Disable Add-ins in Outlook to Close Outlook.exe Itself

In Outlook 2007 :

Go through Tools menu then click Trust Center >> Add-ins >> Go

File >> Options >> Add-ins >> Go

 Disable Add-ins

There are several other programs which run as a background process in a cryptic form creates hurdles while closing Outlook. You need to close these all types of background processes manually. There are various types of integrated program which can become obstacles and you need to close it properly while closing the MS Outlook.

Fax software (like WinFax Pro)

Anti-Virus Software

Anti-spam filters software like Cloud mark

ActiveSync, Blackberry desktops, iTunes softwares

Different opearting system's sidebar Gadgets displaying Outlook information


If you want to remove unnecessary programs from your system you need to go through below steps:

Control Panel >> Remove/Add Programs >> Choose the program >> Right Click >> Remove

If Microsoft Outlook will not close properly then there might corruption in database of Outlook data file. If there is corruption issue in Outlook OST file it can causes a list of Outlook errors and you need to fix corruption issues of Outlook OST using inbox repair tool. You can also take help from any Outlook Fix tool to fix different errors of Microsoft Outlook.