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The error 0x80040702 is displayed if you want to install new software on your computer. More resource-intensive games and software installations generate this error, and to solve the problem, you need to know what causes it and what each version of the error means.
The causes of this error are the following:
The installation program is not able to find one or more of the files it needs to complete the installation.
Obsolete or remaining entries from previous software versions remain on your system and cannot be overwritten.
Viruses and other malware can damage important files that your installation needs.
Your PC has a corrupted registry database.
This page provides solutions to some common 0x8004040702 errors and their solutions:
Correct problems that prevent programs from being installed or deleted.
Corrupted registry key on 64-bit operating systems
Corrupted registry keys that control the update data.
Problems preventing the installation of new programs
Problems that prevent the uninstallation or complete update of existing programs.
Problems that prevent you from uninstalling a program using the Control Panel software (or programs and functions): Works on
Perform a clean boot of the Windows operating system.
A clean boot process is performed to boot Windows with a minimum of drivers and boot programs. This avoids software conflicts that occur when installing a program or an update or running a program under Windows 10, Windows 8.1, Windows 8, Windows 7 or Windows Vista. You can also fix bugs or determine which conflict is causing the problem by performing a clean boot.
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You must log in to your computer as an administrator to perform a clean boot.
Your computer may temporarily lose some functions if you boot without problems. If you start the computer normally, the functionality returns. However, if the problem persists, you may receive the original error message or behavior.
If your computer is connected to a network, network policy settings may prevent you from performing these steps. We strongly recommend that you do not use the system configuration utility to change your computer’s advanced boot options unless requested to do so by a Microsoft support technician. This may render the computer unusable.
Replace missing DLL files
Often Windows is not able to read the files it needs for installation on your PC and will only cause error 0x80040702 because it does not find many DLL files. Fortunately, you can fix this very easily:
1) Note the missing DLL file on your computer.
2) Click Start, then click Search.
3) Find the missing file name. When a file appears, copy it to the c:Windows System32 folder.
4) If there are no results, click on Dll-Files.com and search for the missing file.
5) Download the DLL file from Dll-Files.com and place it in the c:\Windows\System32 folder.
6) Restart the installation.
Performing a Registry Scan Analysis
The Windows registry is the central database system for storing important hardware and software configuration data. It contains not only important information about your mailing client or even your wallpapers, but also information that is essential to the proper functioning of all your applications. If these registry entries are damaged or corrupted, the operating system can no longer read these entries, resulting in errors.
In this case, the failure of some important Windows components, such as InstallShield, may be caused by a defective registry.
https://answers.microsoft.com/en-us/windows/forum/windows_7-gaming/error-number-0x80040702-failed-to-load-dll/6c625ae8-4230-4bba-9616-cffc02b611d1
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