Windows dll problems

For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster. And a module is only loaded when that functionality is requested. Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year.

When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again. The following list describes some of the files that are implemented as DLLs in Windows operating systems:. An example of an ActiveX control is a calendar control that lets you select a date from a calendar.

An example of a. Each item is a specialized DLL. When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. It can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system. A DLL helps promote developing modular programs. It helps you develop large programs that require multiple language versions or a program that requires modular architecture.

An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.

The program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:. These actions are known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Windows and in later Windows operating systems to help minimize dependency issues:. In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent.

Private DLLs use version-specific information or an empty. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty. Each method tells the operating system to use the private DLLs that are located in the program root folder. Several tools are available to help you troubleshoot DLL problems. The following tools are some of these tools. When you open a program in Dependency Walker, Dependency Walker does the following checks:.

It may help prevent and correct DLL problems that may occur in the future. Dependency Walker is located in the following directory when you install Visual Studio 6. The following list describes the utilities that make up the DUPS tool:. This utility enumerates all the DLLs on the computer and logs the information to a text file or to a database file. This utility compares the DLLs that are listed in two text files and produces a third text file that contains the differences.

This utility loads the text files that are created by using the Dlister. This section describes the issues and the requirements that you should consider when you develop your own DLLs. The two methods of linking are load-time dynamic linking and run-time dynamic linking. In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions.

To use load-time dynamic linking, provide a header. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time. When you use run-time dynamic linking, you do not need an import library file. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

I have the same question Report abuse. Details required :. Cancel Submit. Previous Next. Umesh P. Hi, 1. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. In reply to Umesh P's post on April 10, I'm running fix it to try to fix a printer problem. LemP Volunteer Moderator. In reply to I. Learning's post on March 23, Apparently, even the CA "techs" didn't manage to remove everything.

Now to get rid of the reason for the Event. First, go back to Services and make a note of the "service name" of the service you found. This is not the same as the "friendly name" that appears in the list of services. As an example, if you scroll down to "Print Spooler" and open its properties, you'll find that "spooler" is the the "service name" for that service.

Similarly, you'll find "Automatic Updates" in the list of services; its "service name" is wuauserv. While you have the Properties for this TM Engine service open, click the "Dependencies" tab, wait a moment or two for the system to scan, and then make sure that there is nothing listed in the bottom box: "The following system components depend on this service" if there are dependent services listed, they are most likely additional remnants of CA Antivirus and need to be removed as well.

Let the scan complete and then click the Services tab.