According to the latest statistics, the percentage of computing systems running a software package from Microsoft - Windows, is about 91%. In light of this, one should not be surprised at the abundance of questions from users who are somehow connected with the work of this particular operating system. One of the most common is just related to the peculiarities of the accompanying software.
So, sometimes trying to install an application results in the error "Windows cannot install required files 0x80070017". Such failures can be related both directly to the Windows operating system itself and to third-party applications.
Although many computer owners have almost abandoned the use of CDs, preferring media based on solid-state flash memory, neverthelessthe first ones still exist. One of their drawbacks is the impossibility of error-free reading of the recorded data in case of careless storage and scratches on the mirror surface. Thus, if, when working with CDs, when trying to install an application, a system window appears, which reports that Windows cannot install the necessary files, then you need to make sure that the media is not damaged. Sometimes, to restore performance, it is enough to wipe the disk, eliminating dirt, fingerprints, etc.
In order for the drive to read data from the disk normally, it is recommended to write at a low speed, up to the minimum.
Also, the burning software must be properly configured, so the various "burning" functions must be disabled. And finally, it should be remembered that rewritable CDs (RW) are inferior in quality to their simpler brothers of the R standard (both + and -). The best "treatment" option is to use a flash drive. You can also try switching the hard drive mode from AHCI to IDE in the system BIOS.
Both of the above points primarily relate to errors that occur when installing the operating system itself on a computer. No less often, users receive a message that Windows was unable to install the necessary files when working with applications. To understand the cause of what is happening, we will generally consider the processsoftware installations. When you click on an executable file, the data in it is extracted in the background to an intermediate folder, from which, like bricks, an integral set of program files is created in the target directory. If an anti-virus protection is installed on the computer that detects a threat in one of the unpacked files, then access to it is blocked. And since often the user is not even informed about this, the result is a system error "Windows could not install the necessary files." Thus, when this happens, you can try to disable anti-virus protection during the installation of the application.
If the re-installation proceeds without errors, then the reason is in the antivirus or, indeed, in the presence of a threat in one of the files. Obviously, such a check is potentially dangerous due to the risk of infecting the system, so it is recommended to try installing the same application obtained from another source.
If the user is informed that Windows failed to install the necessary files, then one of the reasons may be incorrect work of the installer. Earlier, we described the application installation process. It occurs "under the control" of the executable module, which tells the system which files to transfer from the temporary folder to, unpacks the compressed data. Therefore, any failure in its functioning just leads to the message "Windows could not install the necessary files."Although, again, this is just one of the possible options. The solution is a sanity check with a similar app from another source.
Since the installation is carried out on some disk (hard drive, flash drive, etc.), when the free space on it is exhausted, the installation cannot be completed without errors. In addition, file copy failures can be caused by file system errors on the media itself. In these cases, you need to make sure that there is enough free space, as well as check the disk for errors.