MSIDNTLD.DLL, the Microsoft Identity Manager
Msidntld.dll is a component essential for the functionality of Microsoft Identity Manager. The dll file is found in all Windows operating systems from Windows XP and above, including XP Home, Professional, SP1, SP2, SP3 and Windows Vista. The common path for msidntld.dll is c:\windows\system32\dllcache\msidntld.dll. Microsoft Identity Manager is utilized for user management and provisioning in computer and networked systems for ensuring security and work standards compliance.
Different versions of the msidntld.dll file are available and are often not compatible with different operating systems. For instance, Windows XP Home edition uses version 6.0.2600.0 while Windows Vista uses version 6.0.6000.1. The msidntld.dll is used in a lot of areas within windows and should not be deleted or disabled as it would cause many of the system programs to crash and make the system highly unstable.
None of the msidntld.dll file versions has been reported as malicious files, but if you are missing the file and need to download it from a web source, make sure you follow safety precautions.
Errors and Solutions
1) The identity login could not be started. Some components are either missing or incorrectly configured.
2) Outlook Express could not be started. It may not be installed correctly. Make sure that your disk is not full or that you are not out of memory. Contact Microsoft support for further assistance (0x80040154)
Both of the above-mentioned errors are caused by either damaged or incorrect versions of the msidntld.dll file in Internet Explorer or Outlook/Outlook Express. There are two or three methods to solve this problem and each method depends on the operating system available in your computer. The only generic solution for all operating systems is to insert the original Windows installation disk, manually extract the Ie_extra.cab file, and install the dll in the system32 folder.