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Ms Outlook is widely used email client application which uses various types of dll files. Among all MSMAPI32.dll is one of the most important dll files which is responsible for running several internal components and Scanpst.exe tool. Many a times it happens that while working with Scanpst.exe tool, it fails to work with fatal error and indicates that something has been wrong with MSMAPI32.dll file. In such cases users have to encounter “procedure entry point DDLUninitinstance@0' error on PC. The error message appears in the following given format:
“The procedure entry point DDLUninitinstance@0 could not be located in the dynamic link library MSMAPI32.dll.”
There are several reasons which are responsible for the occurrence of error message such as:
- Scanpst.exe tool is damaged or incorrect
- Version of MSMAPI32.dll is not compatible with the current version of Outlook
- Bad or corrupt file system
- Presence of another Outlook installation in system
- Virus infection
- Accessing Scanpst.exe tool from Incorrect location and others

Due to the above given error message users are unable to perform with Scanpst.exe tool. Whenever they try to open or access Inbox repair tool Procedure entry point DDLUninitinstance@0 error message appears to display screen and abrupt the process. In order to get rid out of this problem it becomes necessary to fix the problem as soon as possible. You can troubleshoot this issues with the help of following given steps:
- First of all check the versions of MSMAPI32.dll file is same as that of Outlook. Version number of Outlook 2007 is 12, Outlook 2003 is 11, Outlook 2002 is 10 and Outlook 2000 is 9.
- If you have installed two versions of Outlook then Uninstall one of them run “detect and repair and then try to run Scanpst.exe tool. s
If the Procedure entry point DDLUninitinstance@0' error message still appears and you are unable to repair file then it implies that PST files has been highly corrupted and cannot be repaired. So, in such cases you can use third party PST repair utility to repair and save your data from loss situations.

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