To center your desktop icons first, download the Taskbarx choose the portable zip x64 bit Follow the screen-shots or watch the video at the end of this post
Open the downloaded file and unzip it
Now copy the unzipped file and go to Drive C, open program files; paste the file here. See the screenshot.
Now from the program files in the C drive, open the folder you pasted earlier.
Find the Taskbar X configurator exe file right, click on it, and send it to the desktop.
Now double-click the Taskbarx shortcut (Software) on your desktop, now your taskbar will automatically be centered. See the screenshot. your taskbar
The result would be like the screenshot below.