Avg general error while updating
If the Windows Installer Service fails to start or shuts down unexpectedly, installation routines that depend on the service fail also.
Therefore, if the AVG installer displays a "Failed Windows Installer Service" or similarly worded error, the Windows Installer Service probably just encountered an error and shut down to prevent damage to Windows.
AVG Anti Virus Free program does not include all the bells and whistles of paid versions such as AVG Internet Security or AVG Premium Security.
For instance, the free version does not support continuous monitoring or automatic updates.
However, if the AVG installation fails because of service or installer errors, you can usually resolve the problem relatively quickly.
AVG releases a new version of its Anti Virus Free program virtually every year.
You can download the AVG Remover tool free from the AVG website (link in Resources).
Windows Installer Service-related errors are common with many applications, and AVG is no exception.
More often than not, the reason for an installation failure can be traced to outdated device drivers, software conflicts, and custom configurations that prevent you from getting the new version.In most cases, restarting the computer will resolve Windows Installer Service errors.However, you may be able to rectify the problem without rebooting by restarting the service manually.However, unlike those regular cumulative updates that you get every month, a new major update means a new set of problems.Although, the Creators Update aims to be the "best Windows ever," building an OS is a difficult task and a lot of work, and it's expected (at least initially) that you'll come across errors, bugs, and other problems during and after the installation.