PCPowerGuide.com » DLL Files

Did You Get an Msvcp71.dll Error?

donna — Sat, 24 Apr 2010 02:21:19 +0000

Msvcp71.dll is one of the many dynamic link libraries that are used by windows applications. This particular DLL file is part of the Microsoft “C” runtime library. That means that any applications that use the “C” programming language use this DLL. When there is a problem you may receive an error like the ones below:

“Msvcp71.dll Not Found”

“This application failed to start because msvcp71.dll was not found. Re-installing the application may fix this problem.”

“Cannot find c:\windows\system32\msvcp71.dll”

“The file msvcp71.dll is missing.”

“Cannot start application name. A required component is missing: msvcp71.dll. Please install the application again.”

Can Msvcp71.dll be a Virus or Some Other Form of Malware?

Like any sysyem file or dynamic link library, a bad guy can create a virus or malware and call it by the same name as a legitimate windows stystem file. If the msvcp71.dll file is found anywhere other than the c:\Program Files or c:\windows folders, it might be some form of malware. You should always run a virus scan any time you receive system errors like this to be certain that the file is not a virus or malware. Most of the time it won’t be.

What causes Msvcp71.dll Errors?

Msvcp71.dll error messages can occur when using or installing specific programs, when Windows starts or shuts down, or possibly during a Windows installation.

Msvcp71.dll errors usually caused by the removal or corruption of the msvcp71 DLL file, a registry problem or a hardware failure.

How to Fix an Msvcp71.dll Problem

You can try each of the following actions to repair an msvcp71.dll error. Start with the first suggestion and continue until one of them solves the problem.

Restore the msvcp71.dll file from the recycle bin if it is there.

Use the system restore feature to try and reset the machine to a time before the error occurred

Uninstall the application that is precipitating the error, run a registry cleaner and then reinstall the application

Update all of the hardware drivers for your computer

Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the msvcp71.dll file. If this DLL file is provided my Microsoft, the System File Checker tool should restore it

Install the latest windows updates to replace any newly released DLL files

Test your computer memory (RAM) and your hard drive. These are the most likely hardware devices to cause a msvcp71.dll error

Run a registry cleaner to correct any problematic registry entries that might be contributing to the problem

If everything else fails and the computer is not running properly or your application is unusable, back up all of the files you don’t want to lose to an external storage media and then format your hard drive and do a clean installation of windows. Then reinstall all of your programs and restore your saved data files.

Recommendation

All versions of window use the msvcp71.dll file so they can all experience this error. Usually replacing the missing file will fix the problem. Just be careful if you download the DLL from an internet website other than Microsoft because some of the ones on other sites are actually a form of malware.

How To Fix kernel32.dll Errors

admin — Mon, 09 Jun 2008 19:16:55 +0000

Kernel32.dll is a dynamic link library used by the windows operating system to handle input, output, interrupts and memory management. That means that this file contains all of the programming code that controls your input and out put operations such as reading the input from your keyboard or mouse and writing that output to the screen or a printer, etc. Interrupts are how hardware devices let the CPU know that they want it to do something. For example, every time you press a key on the keyboard, a voltage is placed on an interrupt line that a CPU module monitors waiting for requests. Each device has its own interrupt line. When the CPU sees the request from the keyboard it starts collecting the input, processes it and sends it to the monitor to display.

Memory management involves taking data not being used at the moment from RAM and writing it to the page file located on the hard drive and then taking requested data from the hard drive and putting into RAM where an application can use it. Obviously, your computer can not function properly if something happens to the kernel32.dll file. Each version of windows uses its own version of the file and they cannot use one designed for another version of windows.

Kernel32.dll Errors

There are several common causes of kernel32.dll errors such as:

Memory

When windows starts, one of the first things it does is load the kernel32,dll file into a protected memory location so it will be available to both the operating system and applications. If a memory module is damaged and the CPU cannot load the file into a protected part of the memory, you will receive a page fault error. A temporary solution is to swap memory modules if you have more than one of them since most protected memory locations are in the first MB of RAM which is always located on the chip inserted in slot 0. If that fixes the problem, you have damaged blocks on the other module. You should replace the damaged memory chip.

Swap File

If your swap file is too small, non-existent, or located on an area of the hard drive with bad blocks, it can cause an error. The solution is to run a utility to mark bad blocks on the hard drive so that the operating system does not use them. Put the swap file on a different partition or replace the hard drive.

Video drivers

Although any bad hardware driver can cause errors, the most common drivers that cause kernel32.dll problems are video drivers. This usually only happens when new drivers are installed or the old file becomes corrupted. Boot the computer in Safe mode which causes it to use VGA display settings and update or replace the video drivers. If you can’t boot to safe mode, use the repair console to replace the driver file.

Over clocking

If you have over clocked your system, consult your motherboard manual and reset the BIOS setting back to the default and see if that fixes the problem. It is possible that a newly installed application cannot use the higher clock speed.

Overheating

Most CPUs have safety features that will shut down the CPU if it reaches a critical temperature to prevent it from getting fried. However, the operating system can experience failures such as a kerner32.dll error when the system is running hot. Check you CPU and case cooling fans and make sure they are clean and working properly. Dust tends to accumulate on the fan blades which slows them down and prevents proper cooling.

Graphic Accelerators

Check the manual for your graphics accelerator to see what settings are appropriate and how to trouble shoot it or visit the manufacturer’s website. If it was working properly, there may be a hardware problem. If so, you should replace the graphic accelerator.

Active Desktop

Active desktop can cause all sorts of annoying problems. Most of the time, the operating system will shut it down if there is a problem. I’m sure everybody has seen the white screen with the big triangle asking if you want to restore your active desktop. You can see if this is the problem by disabling all of the features and then re enabling them one at a time to see if one of them is causing the problem.

Registry entries

Corrupted data in the registry can cause the problem. Run a good registry cleaner to correct any problems. You should run anti virus and anti spyware programs as well since viruses and malware are what frequently causes the registry problems.

Summary

If none of these step work, you may need to reinstall the windows operating system. Just remember to backup all of the files you have created because most of them will be overwritten during the reinstallation.

What is a Windows DLL File

admin — Mon, 02 Jun 2008 13:58:37 +0000

A windows .dll file is a dynamic link library which is a method that windows uses to house commonly used features to make application development easier and to maintain the modularity of modern programming. The windows operating system contains over 10 million lines of programming code. With out modular programming, a small change in one part of the code could cause the entire system to stop working. The idea behind the dlls is to let an application call common features such as printing, opening a hyperlink, opening and closing a file, etc. Many hardware drivers are now written as dll files to take advantage of the windows API and minimize the possibility of interoperability problems. So basically a .dll file is an executable program that cannot run as a stand alone program. It must be called by another application to run.Missing windows .dll is a common error message that users receive when they try to run an application. You get this message for any one of several reasons. The most common causes of this error are:

You removed a program that uninstalled the windows .dll file that the program you are trying to opens needs to run.
You installed a new application and it over wrote the version the application needs and the new version of the .dll file doesn’t contain the required information.
Some software event that occurred on your computer corrupted the .dll your application needs
A hardware problem on your hard drive caused the file to become corrupted.

In all of these cases the solution is to find and install an uncorrupted version, or in some cases, the correct version of the needed file. There are several websites that offer windows .dll files for download. Some web sites provide free downloads and others charge a per download fee. Another source of an uncorrupted windows .dll is the broken applications original install disk or the windows installation disk. Either one of them may have the correct version of the missing or corrupted file.

Restore Points

Both windows XP and Vista users can try to restore their computer to an earlier configuration using the windows system restore feature. This feature allows you to undo any recent changes by reverting to the last configuration saved by the system.

Use the SPC Command

You can also use the SPC command to have windows scan and repair files on your hard drive. Perform the following steps to use the SPC command:

Select Start
Choose Run
Type spc /scannow into the dialog box and then press Enter.

Windows will scan the system and will verify the files and report the results.

Reinstall the broken application

You can always reinstall the broken application. Make sure that any files you have created that are stored in the program’s directory on the C drive are backed up because in most cases they will be deleted by the reinstallation. Since you are reinstalling your application, this would be a good time to visit the publisher’s website to see if there are free updates or patches available for the application and install them as well

In fact, if there are patches or updates, installing just them might fix your problem. If not, do the complete reinstall. If the problem was caused by another program overwriting the needed .dll file, that program may stop working after the reinstall.

Malware Infection

Another possible cause of windows .dll problems is your computer being infected with a virus, spyware or some other form of malware. Therefore, you need to run you anti-virus program to check for virus infections. Then run you spyware program. In both cases let the applications clean up the suspected files. Just to be on the safe side, when you have completed these scans use a good registry cleaner to remove any problems in the windows registry.

After completing these repair functions, then try reinstalling the broken application to see if that fixes the problem.

Summary

If none of the suggestions offered above solve your problem and it is a single application, contact the software’s publisher and ask their technical support how to fix the problem. As an alternative, you can check the online user forums for your application and see if anyone else has had this problem and how they fixed it. There usually is someone out there who can tell you how to fix almost any problem you might encounter.

How To Fix Missing DLL Errors

admin — Wed, 20 Feb 2008 21:14:16 +0000

A dynamic link library (DLL) is a file used by the windows operating system that contains programming functions and subroutines that can be used by more than one application on your computer to perform common or repeated application tasks. Many device drivers and vendor specific application programming code are packaged as DLL files.

When the windows operating system cannot find a dynamic link library that was called by an application, you will receive a missing .dll error similar to the one shown below.

“Internet Explorer encountered an error in KERNEL32.DLL at 0137:BFF3191C”

Error Causes

A missing or corrupt .dll file can be caused by any of the following problems:

An existing program was uninstalled and the uninstall process removed a shared .dll file that was required by the application you are trying to open
A newly installed application overwrote the .dll file with a different version of the file that is incompatible with or older than the one needed by other programs
The .dll file was corrupted by a bad or incomplete installation process, or malware program
The .dll file was deleted accidentally or on purpose by user carelessness or a malware program

Fixing the missing .dll Problem

Repairing the problem is dependant on what caused it.

Missing DLL Files

The first thing you should do is to use the windows search feature to see if the missing file is on your machine. Next go the Microsoft knowledge base at http://support.microsoft.com/ and search on the name of the .dll file to see if there is a known problem with that specific dynamic link library and a specific procedure to fix it.

If the file does not exist on your machine or there is nothing in the knowledge base, you need to replace the missing file by either copying it off another machine or downloading it from the internet. However, replacing the file may or may not work and requires care because replacing the file may cause other errors to occur.

Recently Install Application

First uninstall the application. If the problem was with that application, re-install it and see if that corrects the problem. If the problem was with a different application, try to open the non-working application after the uninstall to see if it is working. If it is, you probably have an incompatibility problem. This may not be possible to fix. You can try and copy the old .dll file to the application’s directory under Program files and delete it from the shared location. If the old application still works, you can safely install the new application. If it doesn’t, contact the existing application’s publisher and see if they have a patch to correct the situation. In the meantime, you need to decide which application you need most.

Recently Uninstalled Application

The uninstall program may have deleted a necessary .dll file. Reinstall the application to restore the missing file. When you uninstall the program again, select NO to ALL when asked to delete a system file or any shared file that may be used by another program.

System Restore

Microsoft has packaged some tools that can be used to correct problems.

If you are a windows XP user, try doing a system restore. Select Start -> Al Programs -> System Tools -> System Restore. Follow the instructions in the system restore dialog box to restore your computer to a time before the problems occurred.

SFC Utility

Both windows XP and 2000 users can us the SFC command to repair files. Click Start -> Run. Then type sfc /scannow in the dialogue box. When completed, windows will tell you if all protected windows files are ok.

Virus or Other Malware

Viruses, spyware, Trojans, worms, etc. can be the cause of the missing .dll file error. These programs can corrupt or delete files on your computer. Do a full virus scan, run a spyware remover and then do a full registry cleaning. You may also have to replace the missing or damaged files using the method described above.

Problem with Windows

If the error occurs when you are booting up into windows, you will need to boot to the safe mode. You can then do a system restore. If the machine will not boot into safe mode, you can use the repair console to fix the problem.

If the error occurs when you are trying to perform a task such as opening the control panel, you will need to boot to your installation CD and do a file repair.

In the worst case scenario, you will need reformat the hard drive and reinstall the windows operating system and all of your applications.

DLL File Errors

admin — Mon, 14 Jan 2008 16:49:59 +0000

A dynamic link library (DLL) is a file that contains several small programs that can be used by other applications running on your computer. The primary purpose is to make programming applications more modular by reusing existing code. Modular construction makes it easier for the supplier to make changes without have to completely rewrite the application. Many device drivers are packaged as DLL files. For those of us who are familiar with programming functions and subroutines, a dynamic link library file is just a collection of functions and subroutines that can be called by any process running on the computer.

Another reason for creating dynamic link libraries was Microsoft’s idea of locating all of the files needed by application in a central location to minimize the time the computer needed to locate the file so it could load it into memory.

Some common used windows DLL files include: msvcr80.dll which is needed to run programs compiled with Visual Studio 2005 and iexplore.dll which is a Browser Helper Object (BHO) that runs automatically every time you start your Internet browser. When either one of these files is missing or corrupt, the application calling it will not run.

Advantages of Using DLL Files

There are several advantages to application programmers using dynamic link library files such as:

DLLs use very little memory – since the programming code and it companion data stored in the DLL are only loaded into memory when needed, DLLs use very little memory and can be placed into read-only memory pages which allow any application to use it saving greatly on duplication of effort and storage space.
Reduces Page Swapping – normally a computer moves data into and out of memory whenever it uses it. As a result, if a process uses a file, that file is loaded into memory when called and unloaded when the process finishes. Rather than constantly loading and unloading DLLs, the operating system just maps them to the address space of the new process which eliminates the need to keep loading and unloading the DLL each time it is requested.
Generic Code – once developed, a DLL can be used in any application created which saves a lot of time and effort for application developers.
Provides interoperability between programming languages – a dynamic link library written in one programming language can be used in applications written in a different programming language. It is a common practice for developers to write optimized routines in an assembly language and package them as a DLL then later call them from a C++ or Visual Basic application.
Allows easier updates – If a problem develops, or a new feature is desired, a programmer can create a new DLL as an upgrade to the applications rather than completely rewriting all of the code.

Disadvantages of Using DLL Files

DLL compatibility errors – sometimes when a program fails to load, it will display an error message such as the ordinal 0×876 could not be located in the dynamic-link library xyz.dll or you install a new application and some other programs stop working correctly. This is usually the result of a new DLL that is not backward compatible with older versions of the same dynamic link library. This usually happens because the programmer did not sufficiently test the new DLL to make sure it would support all of the functions of the earlier version
DLL naming errors – a new application is installed and the entire system crashes. This occurs when a programmer accidentally names his new DLL with the same name as an operating system DLL and thus effectively overwrites it causing the system to crash.
Missing .dll – The system tells you it can not find a specific DLL and refuses to open the application. This happens when the dynamic link library was not included in the installation package or the DLL file has somehow become corrupted.

Fixing DLL Errors

Developers should always be very careful not to name a new dynamic link library with an existing system DLL filename. They should also include the most recent version of any DLL files they need to use in the installation package and store then in its own program directory. That way they will not crash the system and they will have everything they need to run their application.

If a missing .dll error occurs, you should be able to download the missing file from http://www.dll-downloads.com/ . This site also provides tutorials on how to both download the file and where to put it after downloading.

PCPowerGuide.com » DLL Files

Did You Get an Msvcp71.dll Error?

Can Msvcp71.dll be a Virus or Some Other Form of Malware?

What causes Msvcp71.dll Errors?

How to Fix an Msvcp71.dll Problem

Recommendation

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How To Fix kernel32.dll Errors

Kernel32.dll Errors

Summary

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What is a Windows DLL File

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How To Fix Missing DLL Errors

Fixing the missing .dll Problem

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DLL File Errors

Advantages of Using DLL Files

Disadvantages of Using DLL Files

Fixing DLL Errors

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