Many errors occur because there are some missing DLL files and other required program files from the computer. Some of the common causes of missing file problems are:
- Virus infections that may delete or infect the DLL or program files that are required by programs to perform a task.
- A new program installation overwrites a shared DLL file with an older version.
- A program removal process removes a shared DLL file that is being used by other programs on the system.
- There are invalid DLL entries in the registry that are preventing the DLL files from performing their functions.
Errors such as these can be easily prevented by a little user vigilance and some amount of preventive PC maintenance. For example, when installing new programs, you must be careful not to overwrite newer versions of files with their older version. In the same way, when you remove programs, retain the DLL files that are required by other installed programs. Malware infections are a major cause of hundreds of computer errors, so you must take measures to prevent these problems. For instance, it is absolutely essential that you have an antivirus and an antispyware tool on your PC. If you encounter missing DLL file error messages, you may update these tools and thoroughly check your system for malware infections. For better results, it is recommended that you run the scan in Safe Mode. To fix errors due to incorrect entries in the registry, you may need to re-register the DLL files causing the error by using the regsvr32 command. To correct DLL entries in the registry, you may use a reliable registry cleaner tool to scan your registry on regular basis and repair any errors detected within it.
In addition to antivirus and antispyware tools, another helpful security utility is the firewall. Although your Windows XP and Windows Vista computers come with a built in firewall, many users may opt for other third-party firewalls depending on the security requirements of their computer system and the data stored on it. At times, these firewalls may create problems with programs, such as Windows Automatic Updates and Antivirus that need to download information to your computer on a regular basis. To resolve these problems, you may need to configure your firewall to allow these programs to access the Web. However, if the problem continues, you may have to remove firewall protection and opt for other security measures to keep your PC safe. For instance, you may use a firewall that is friendlier with Windows and has a user-friendly interface that makes it easy for you to configure it according your needs.