Often, many Windows users who have problems installing critical updates for the system or additional service packs seek help from Microsoft tools that allow you to install updates, so to speak, bypassing the built-in "Update Center". In the case of the seventh modification of the OS, the most optimal tool is the so-called standalone Windows 7 update installer, which, however, is not included in official assemblies, but can be downloaded and installed separately. Let's take a look at how this applet works, as well as some of the most common errors and how to fix them.
What is the Windows 7 Offline Update Installer?
This tool itself is universala tool that allows you to install update packages manually downloaded by the user in CAB and MSU formats, without the obligatory connection to the Internet, as is required in the case of a "wired" update tool. The essence of using the Windows 7 standalone update installer is to install the program as an additional toolkit, and then use its own service to install updates, which runs either in a visible or in the background (it all depends on how it is started initially).
How does it work?
You can start the Windows 7 Update Tool applet after installation either directly using the graphical mode or through the command console, in which additional launch attributes of the start command can change the mode of operation (for example, transfer work to the background, hide notifications on completion of installation of update packages, etc.).
The Windows 7 standalone update installer service itself (Wusa.exe) after starting, first reads the metadata of the Update Center, then analyzes the update files of the above formats and copies them to the so-called sandbox or protected folder, then to the Update Center” calls the API function, and after the installation is completed, returns the code.
Download and install the applet
It is recommended to download this toolkit directly from the official resource of the developer corporation, taking into account the architecture of its own "seven", which equally applies to the subsequent download of important updates. The sizedownloaded installer has a volume of about 680 MB. To install, as usual, start the file on behalf of the administrator, after which you just need to follow the instructions of the installer and wait for the process to finish.
Now, if you already have the updates downloaded, you can start the Windows 7 standalone update installer service in the same way as any other stationary program, or use the command line, where the main command (Wusa.exe) is written, which can be added with attributes. You can get complete information on them in the help system of the command console by entering the combination wusa.exe \?.
The most common installer errors
Alas, like many other Microsoft software products, this applet is not immune to errors.

The most common service deactivation messages, as well as Windows 7 Offline Installer errors 0x80070424 and crashes with similar numbers starting with 0x80. Almost all errors boil down to the fact that for the specified applet its own service running in the background was deactivated for some reason, which makes it impossible to start the main tool.
Methods to fix "Service disabled" Windows 7 Updates Offline Installer failure and similar errors

To troubleshoot startup issues related to the unexpected stop of the main service, you need tocall the services section (services.msc), find the desired process in the list, double-click to open the parameter editing window, start the service by pressing the corresponding button and set the start type to automatic (but not delayed), then save the changes.
Similarly, you can fix the problem through the command console, which will need to be run exclusively as an administrator.

First, the combination sc config wuauserv start=auto is written in it, which switches the process to automatic mode, and then the sc start wuauserv command is entered, which directly activates the service itself.

If the Windows 7 offline installer error 0x8024800c occurs, the net stop “Windows Update” command is sequentially written (exactly as shown), then the SoftwareDistribution folder located in the root of the Windows directory is deleted, and then the service is restarted by typing combinations net start “Windows Update”.
Note: if the above folder is not deleted for some reason, you can use Disk Cleanup to remove system files or unlock the directory using the Unlocker applet. You can also change the owner of the directory in the folder properties, but this is far from the best way, and it also requires more time to perform the main and all related operations related to setting the full set of access rights.