Outlook Express may stop working after receiving a "Mailbox full" message


If you use Outlook Express 6 as an e-mail client with an IMAP mail server, Outlook Express may stop working randomly when the mailbox on the server becomes full. You may receive messages that warn you that your mailbox is full, or you may receive any of the following error messages:

Msimn.exe - Application error:
The Instruction at "0x77f6750b" referenced memory at "0x00000058". The memory could not be read

Your IMAP server wishes to alert you to the following: (100) Your mailbox is full. Delete messages you no longer require


A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date Time Version Size File name
01-Aug-2002 04:24 6.0.2720.100 580 KB Inetcomm.dll


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Artikelnummer: 327303 – Letzte Überarbeitung: 28.05.2008 – Revision: 1