Microsoft provides periodic updates for its operating systems and software applications through the Windows help and support network. When set in the automatic update mode the Windows OS automatically downloads and installs the updates from the Windows support server, whenever they are released or according to the scheduled time set for the downloading the updates.
In certain cases, there might be some error during the update process and your OS might start to show some problems because of this. This might be caused by a corrupt file, an internet connectivity problem in the middle of the update process, etc. Whatever be the reason, you could just uninstall this update and get the system back to functioning normal.
Uninstalling the security update
According to the Windows help and support website, the OS security updates in the Windows OS are very similar to a software application and can be easily installed or un-installed as per your requirements. So, to remove the problem-causing OS update, go to the Control Panel and click on the Add or Remove Programs option.
This would display a list of all the application currently installed in your system. There at the top of the window, you would see the option Show Updates with a check box next to it. Put a checkmark here to select this option. The Add or Remove Programs windows would now display a few more options including the Windows OS updates installed in the system.
You need to go through this list of updates and identify the recent Windows security that is causing the problem. Select it and press the Remove button. This would remove that particular Windows update alone from the system. This might take a while and you might be asked to restart the system after it is done.
Note down the security update version to make sure that you would not install the same update again in the future. You also need to disable the automatic update option to avoid this installation. From now on, use the manual update option for installing the updates. After checking for the available updates, de-select the security update that caused the error from the list.
Also, always set a system restore point before you install any OS update. This would ensure that in the event of an update error, you can go back to an earlier time stamp in the system and avoid the error.