While using the QuickBooks I am experiencing a requiring issue where system suddenly glitches and completely hangs, network completely gone. please kindly rectify this.

Hello there, Huda. QuickBooks Online (QBO) is a web-based service, it still depends on your computer or device to run smoothly. It needs enough processing power, memory (RAM), and a good internet connection to work properly.
 

To fix slow performance, let’s go over a few things to make sure you’re getting the best experience with QuickBooks Online.

Here are the following things to consider:
 

• First, we suggest using Google Chrome for the best performance. If you're already using it, make sure it's up to date by going to the Chrome menu, then Help, and then About Google Chrome.
• Make sure your computer's operating system is updated and that it meets or exceeds the system requirements for QBO.
• Check your internet speed by running a Google Speed Test to make sure a slow connection isn't causing the problem. Make sure to read about what the results mean.

You can also learn how your internet browser and mobile connection can affect how QuickBooks Online runs by reading this article: Why is my QuickBooks Online slow?
 

If you have any further questions or need assistance with QuickBooks, feel free to click the Reply button.