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missing WAB.dll file

This error occurs when attempting to open or use the Windows Address Book. In turn you will be unable to access the features that it offers until you have resolved the problem. There are two likely causes of this problem and both require similar steps to resolve. The Windows Address Book dll, or wab.dll is either missing or has become damaged or corrupt. It may also be possible that you have an incorrect version of the wab.dll library installed on your computer, but again these steps will resolve the issue if this is the cause.

Locate the wab.dll file on your system, and rename it something like wab.old. This will prevent Windows from attempting to access the file it is corrupt and enable you to add a clean and undamaged version. If the file does not exist then proceed with the following steps anyway. Ensure that you are logged on to your computer as an administrator or with administrator privileges and then remove and reinstall Outlook Express. Outlook Express contains the Windows Address Book files, including wab.dll, so this reinstallation will ensure that everything now works correctly.

The command cannot be performed because a dialog box is opened, click OK then close dialog-boxes to continue

This error typically occurs when the officeav.dll library, the Office plug-in from Norton AntiVirus, has become corrupted or damaged. The error message above will be displayed when you attempt to open a Word document.

Dll files required by applications are often installed as and when needed. As such, removing the officeav.dll, or in this case renaming it, will enable you to add the Office plug-in through Norton and register a clean and undamaged version of the dll. To do this, follow these instructions:

• Locate officeav.dll by using the Windows Search function
• Rename it as officeavold.dll or officeav.old
• Restart your computer

User Interface Failure:
The Logon User Interface DLL msgina.dll failed to load.
Contact your system administrator to replace the DLL, or restore the original DLL.

This error occurs on machines using the Windows 2000 operating system. Specifically, it occurs if you use Windows 2000 with Service Pack 3 installed. More recent service packs and older service packs do not encounter this problem.

This error occurs when you first log on to your computer, because several DLLs and executable files that are dependent on one another attempt to start at the same time. If the files start in the wrong sequence then you will receive this error.

In order to resolve this error users should download the latest Windows 2000 service pack, because this error is not present in any apart from version 3.

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The MSIEXEC file is linked to missing export MSI.DLL:222

This error message is displayed during installation of Office applications, if the installation disks have become damaged or corrupted in any way. This can occur for numerous reasons. For instance, if you have downloaded the installation files and the download was interrupted before it could complete then this may cause damage to the installation files. Damage to an installation disk can also cause this error.

It is necessary to update the installer that is resident on your hard drive. This is done by visiting the Microsoft website, and downloading installer version 2.0. Once you have done this, try again to run setup. Everything should now work.

While most DLL errors are unique there are some steps that you should attempt before attempting to search for and reinstall the DLL you need from the Internet. Not all websites are trustworthy and, as such, you run the very real risk of potentially installing a virus or spyware riddled DLL onto your system. In most cases you should be safe, but if you can avoid taking the risk then you will avoid the possibility altogether.

Close down all open applications after saving your existing work. Attempt to open the applications again, and calling the same features as you did when the problem manifested itself. This provides your system and the software with the opportunity to open properly and can genuinely improve your chances of a trouble free session.

The switch off and switch on technique has long been the butt of many an IT joke. However, it does help to resolve a lot of problems because it gives your system the opportunity to reopen necessary files, including the DLLs required by your system and the software you are running on it. Always restart your computer properly, whenever possible. Obviously, if your system has hung or crashed then this may not be an option for you. While it may only be a quick fix and not the most ideal solution, attempting to reopen applications in a different order may prevent the problem from occurring again.

Software updates are usually available from the vendor’s or publisher’s website. These updates may contain critical file updates and so should be one of your first ports of call. Most applications include an automatic updater, but whether you choose to use this automated system or manually install updates as and when they become available, ensure that you do download the latest patches and updates. These may contain newer and more efficient versions of DLLs that you need.

As well as updating the software, update any drivers for attached hardware or peripherals. Where appropriate you may want to attempt to update with the latest firmware for those accessories that have it. Both of these methods are likely to introduce the most recent changes to the hardware you use. Because DLLs are sometimes used in conjunction with hardware and peripherals this simple technique may prevent a lot of heartache.

Like the software on your system, the Windows operating system also has regular updates. By default, when you install the Windows operating system, you will be informed of any new updates or patches. You will also be given the opportunity to install them onto your computer. Windows updates include vital patches, as well as security installations that are required to plug any holes left by earlier version of the operating system.

If you receive a DLL error when you attempt to use one specific application or a particular function within that application then you can attempt to reinstall the software. Reinstalling will remove some of the files or DLLs that have become corrupt or problematic in any way and replace them with genuine, clean versions. This may not be the case for those DLLs that are stored as part of the Windows operating system, however.

Also, contacting the software vendor or author may generate good results. Many users will contact them during the lifetime of the software, with any problems they encounter. The more proactive manufacturers will almost certainly find a way to resolve the problem and either publish the steps you need to take online or at least have the answer to hand when you make your own enquiries. Look for a knowledge base or support forum, because these can contain help from knowledgeable third parties. In some cases, other users may have resolved the problem themselves, and posted the solution on these forums and in articles.

If the problem is in the Windows registry, then cleaning the registry may help to resolve the error and ensure that your software and operating system can run properly. Registry cleaning should be done using a good registry cleaner. This third party software searches through the various registry entries to find any errors, duplicates, and other problems. In most cases it can resolve the problems, leaving you with a more efficient system and largely error-free applications.

Antispyware and antivirus software should be a staple part of every computer system. While it’s unfortunate, it’s also a sad fact that the majority of us are prone to picking up spyware and virus threats when we are online, especially if we download files, or even if we read email. Some threats can be picked up by doing little more than surfing to an untrusted website. These can effect the DLLs that are installed on your computer and, often, those that are currently running when you become infected. Download the latest updates to your security software and run a deep scan of your entire system and the Windows registry to find any infections and to clear them up.

Cannot start Outlook. A required component is missing OMINT.DLL. Please run setup again

This error only occurs when trying to start the older Outlook 98 version. It means that you have an incorrect version of outlib.dll installed on your computer that needs updating or backdating. Another possible cause, although less likely, is that the registry entries were not updated when you first ran Outlook on your system.

In order to resolve this issue you should first ensure that you are logged on to Windows NT as an administrative level user and you should then reinstall Outlook 98 on your computer. This will ensure that all registry entries are updated and that you have the proper version of all the necessary dll libraries installed. If necessary you will need to contact a network or computer administrator to either grant the appropriate access or to perform this for you.

General Protection Fault (GPF) - a General Protection Fault typically results in an error message that reads something along the lines of “…has performed an illegal operation and will be shut down”. You are then forced to shut down the application, or it will be automatically closed down. Typically, you will continue to receive this error either when you try to open the application, or when you attempt to run a particular function within that program.

A GPF usually occurs because a DLL no longer exists at the given location. The Windows Operating System or the application itself will display the GPF in order to prevent a total system crash. The software has called the error message rather than shut down your system. If the call for this error message does not exist then you may receive a more serious error.

Corrupt DLL - a DLL, like any other file or folder on your computer, can become corrupt. They become corrupt for one of a number of reasons. Spyware or virus infections can certainly lead to a number of important files on your system becoming corrupt. If you have manually attempted to alter the contents of a file, then this too can lead to a corruption. An interrupted installation, or even an interrupted execution of the DLL may also lead to a corrupt DLL error message.

Spyware and Virus Infection - Spyware applications and viruses are rife. Even with antispyware software installed it is possible that you could have contracted an infection on your system. When this occurs you will most typically be informed that the DLL has become corrupt and cannot be used properly. However, some infections may attempt to alter the contents of a DLL so that it can still be executed. This may be done so that it executes a very different function, or so that your system hands or freezes because it is attempting to complete a never ending function.

As well as incorrect, duplicate, or missing registry entries there are many other problems that may befall the DLLs on your system. It is possible to recover from virtually any error, but it may require some work, and may also mean a loss of functions in some programs. One of the leading causes of problems is an incorrect DLL version being called, and this can occur frequently. It may require the installation of several versions of a DLL, although most are backwards compatible.

Missing DLL - this means that a call has been made by an application for a particular DLL. However, that DLL could not be found. In some cases this means that the DLL file in questions can not be found on your system. However, when a DLL is called, the application must provide a path to that library.

As such, a missing DLL error can occur in cases where the actual DLL name does not match the name of the DLL being called.  It may also mean that the path that is being called does not match the actual path of the eisting DLL. The DLL may be on your system, but it is possible that it could have an incorrect name or be in the incorrect location. This could be an error with the DLL itself or with the coding of the application causing the error.

Incorrect DLL Version - DLLs are updated fairly regularly. This will soon become evident should you begin the search for one either on your system or from a third party website. In some cases, if you have the incorrect version installed on your system then this may cause errors. However, most DLLs are backwards compatible. This means that if you install a new version, but another application is calling for an older version you should not experience any problems.

Where errors of this nature tend to occur is when one application installs an older version of a DLL, while an existing application is demanding an older version. These errors are relatively rare, but when they occur, they can be the most troublesome to resolve.