Personal summary of the reason for the failure of windows7 update

Personal summary of why Windows7 update failed. First of all, from the year of 2009 to the present, Windows 7 has been used for more than a year and a half, and the system has been reinstalled no less than 10 times. Almost every reason is that the system can no longer be updated, with UPDATE update, the download is normal, after installation, the words failed to install, view the error code, is related to the net framework or Office 2003. It has been solved by N methods, and it has not been solved. It can only be reinstalled. Once reinstalled, it's fine, the latest updates can be used, but after a few months, after the release of an update from Microsoft, the update failed. In the meantime, Microsoft's updates can be safely installed and all succeeded. That is to say, after the update installation failed, it can no longer be updated, and the errors are the same. To activate the software, I used PCSKYS_Windows7Loader_V3.27 or XtBeta_SK Patch v1 R2 Final or Oem7Y2.4 NT6. The effect is the same, it can be activated perfectly, but the above problems still occur irregularly.