If your Windows update shows “Error encountered, There were problems installing some updates, but we’ll try again later” If you keep seeing this and want to search the web or contact support for information, this may help:(0x80073701)” message then it means some system files are missing in your system because of a recent system crash, sudden power failure, any virus activity or some unknown reason. You can easily solve this using the below methods. But you need some good time and patience. Yes, patience!. Some below methods take a long time to finish based on your system configuration. For me it takes more than 12 hours to complete, so patience is very important.