Same issue as described at: Bug: Windows region settings (digit grouping symbol, decimal symbol) break Intel HD Graphics Control Panel
If latest driver fails try the others from: Downloads for Intel® HD Graphics 5500
This message was posted on behalf of Intel Corporation
I understand the Intel® Graphics Control Panel is not properly displaying settings.
Let me apologize for any inconvenience this issue may be causing to you.
In order to help you better I would like to gather more information about the configuration you have in the computer. Please attach to this thread the .txt file the Intel® System Support Utility will generate https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility
If possible also attach the Intel Graphics Driver Report. This link will show you how to generate it https://www.intel.com/content/www/us/en/support/graphics-drivers/000005848.html
Was there any software or hardware change before the issue started happening?
To attach a file, you must click “Use Advanced Editor” on the upper right hand corner of the response box, then the “attach” option will appear on the bottom right hand corner of the response box.
Thanks @intel, I fixed this by resetting the default in "Change date, time or number formats"