Error code 15222 in QuickBooks typically occurs when there is an issue with the QuickBooks Desktop update feature. To fix error code 15222, you can follow these steps:

Update your QuickBooks Desktop:

Open QuickBooks Desktop and go to the "Help" menu.

Select "Update QuickBooks Desktop."

In the "Update QuickBooks" window, click on the "Update Now" tab.

Make sure the "Reset Update" checkbox is selected.

Click on "Get Updates" to start the update process.

Once the update is complete, close and reopen QuickBooks.

Verify your Internet Explorer settings:

Open Internet Explorer and go to the "Gear" icon (top right corner).

Select "Internet Options" from the dropdown menu.

In the "Internet Options" window, go to the "Advanced" tab.

Scroll down to the "Security" section and make sure the following options are checked:

Use SSL 3.0

Use TLS 1.0

Use TLS 1.1

Use TLS 1.2

Click on "Apply" and then "OK" to save the changes.

Configure your antivirus and firewall settings:

Check if your antivirus software or firewall is blocking QuickBooks Desktop from accessing the internet.

Refer to your antivirus or firewall documentation or contact their support for instructions on how to add exceptions or allow QuickBooks through the security settings.

Ensure that the following QuickBooks executable files are allowed:

qbw32.exe

qbupdate.exe

qbwebconnector.exe

qbittorrent.exe

Manually download and install the update:

If the automatic update process fails, you can try manually downloading and installing the update.

Go to the QuickBooks Downloads & Updates page on the Intuit website.

Select your QuickBooks Desktop version and country from the drop-down menus.

Click on "Search" to find the latest update available.

Download the update file and follow the on-screen instructions to install it.

Restart your computer: After completing the above steps, restart your computer to ensure that all changes take effect.

Regards,
Peter