Why are all my Apps disconnected?

Thank you for using QuickBooks Online (QBO), Mario. We understand how you feel about your apps getting disconnected. We're here to share some troubleshooting steps to help fix the issue so you can get back to your business.

We understand the importance of using our program without any issues and performing your task in our program flawlessly. In this case, we can perform the basic troubleshooting steps to help fix your browser to work better and faster. Cookies and caches might block you from accessing some features and apps in your QBO account.

Here's how:
 

1. Restart your browser.
2. Log in to your account in an incognito or private browser and see if you can open the QBO page. You can use these keyboard shortcuts to launch a new private window:
    

Google Chrome: press Ctrl + Shift + N
Mozilla Firefox: press Ctrl + Shift + P
Safari: press Command + Shift + N
 

If it works on the private browser, you can go back to the regular browser and clear your browser's cache. Then see if it works, and the apps connected to your QBO account is all good and not tag as disconnected. Otherwise, you can use another supported browser.

To learn about the latest news and updates in QuickBooks, you can check out this article: QuickBooks Blog.

If the issue persist, we suggest contacting our support team to get this investigated.  You can visit this article for more details on how to connect with our phone and messaging support: Contact QuickBooks products and services support.

Please don't hesitate to get back to us if you have additional queries with managing your company file. We'll be here for you always. Stay safe, Mario!

Using a Private Browser did not give better results. Asking the User to go through the machinations of: re-launch the app in a new / different browser, followed by going into settings, finding the Privacy options, then manually Clearing Cache is asking too much of the Users. 

It's clear that no one on Intuit Support Staff really knows how to fix any of the problems that are reported; they always reply with the same answer, and it never solves the problem. Then, after several days to several months, the reported problems disappear. It's pretty obvious that problems are corrected via re-coding. This is a waste of everyone's time; just perform proper regression testing every time changes are made, and problems will be minimized. 

I'm sure I'm not the only User who is constantly disappointed by various Intuit products. 

I have face this issue and i know a person feel when he is trying their best to connect their apps and getting the best results which he wants for their system. But when it no going with way its really disappointing. I think you need relax focus on your steps where the mistake occurs. Otherwise refresh your browser and connect again. If again does not it work for you then contact to QB Support system. It will definitely assist you.