I have installed Office 2003 Professional on a Windows 10 computer. It works OK so far but I have not used it enough to know for sure if there will be any problems. Make sure you have also installed SP3 for Office 2003.
You might want to install the "Microsoft Office Compatibility Pack" so you can save Word, Excel, & PowerPoint in the new Office 2007 and newer file formats. That is, .docx, .xlsx, & .pptx.
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File Formats
https://download.cnet.com/Microsoft...Point-File-Formats/3000-18483_4-10648733.html
This shows the SaveAs in Word 2003 before and after the "Microsoft Office Compatibility Pack" is installed
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