How to Fix QBPOS Error Application Update required?

Steps to Resolve QBPOS Error: Application Update required

Select the resolution suitable to your POS setup or situation. You have QuickBooks POS on a single desktop. Follow the steps to resolve QBPOS error Application Update required.

1) You have to create a backup and then restore the different file backup files in QuickBooks Desktop Point of Sale
2) Run the verify data utility and then compress Data Base.
3) Execute a clean reinstall for QuickBooks Desktop Point of Sale
4) Test in a New Windows User such as Windows 7/8/10.

Error on Server when Multiple Devices are connected
However, if you have multiple devices with POS and you get the error on the server and all client computers then follow some of the troubleshooting steps:

1) Tap on Network speed
2) Generate a backup and then restore to a different backup files in QuickBooks Desktop Point of Sale.
3) Run the verify data utility and then you have to compress Data Base.
4) Now, you have to perform a clean reinstall for QuickBooks Desktop Point of Sale
5) Test a New Windows User such as Window 7/8/10.

Error on All Server when Multiple Devices are connected

You have multiple computers with POS and you get the error on all OR selected client devices

1) At the first step, you have to Check the Network Speed
2) Execute a clean reinstall for QuickBooks Desktop Point of Sale
3) Test in a New Windows User such as Windows 7/8/10

Error while accessing your Item List
If you got the error when accessing your item list

1) Eliminate the Tax Code Column in the Item List.
2) You have to generate a backup and then restore the different backup files in QBPOS.
3) Run the verify data utility and then compress Data Base.

Problem on the server or client when attempting to open POS
1) You have to execute a clean reinstall for QuickBooks Desktop POS
2) Test in a New Windows User such as Windows 7/8/10

Alternative Ways

1) First of all you have to ensure that all updates are properly installed
2) After that, you have to Press the Exit option on the update screen
3) Hit on the Help button and check the updates of software
4) Now, you have to install all the updates of QBPOS.
5) Finally, you can also have an option to manually update your QuickBooks POS.
6) After that, you have to Delete some of the files from the Entitlement Client Folder and then you have to remove it easily from the WSActivity.xml file

After following all the above steps, you might get the issue fixed of QBPOS error Application Update required. If unable to resolve it, you can feel free to reach the experts for help.