My Microsoft Office 2003 stopped working in Windows 10

Reinstall should be qualified with the line that provided you have serial key for the product as Office 2003 was dependent upon old style license serial keys.

And is it even feasible / reliable?!

Even with Excel 2010 (the last reliable version of Excel, IMHO) on Win 7 (the last stable version of Win, IMHO), I have been relunctant to attempt any "repairs" and "updates", much less "reinstalls".

First, I never trusted MSFT to do those correctly in the first place, even "in the good old days". But at least we had cust srvc to fall back on if things went wrong.

Now that MSFT no longer supports Excel 2010, much less 2003, of course we cannot get cust srvc support. And more to the point, MSFT is so agressive in coercing users to upgrade to subscription services (which are completely unreliable, IMHO) that I would not trust any downloadable files of "out of support" products.

Anecdotal note.... Long after MSFT purchased Skype, we tried to update Skype on my mother's Win XP computer. The result was: intermittent errors when my mother did something unrelated on the computer. (I don't remember what; it was many years ago.) According to a third-party tech, the problem was: the Skype update modified the Registry with a Win 7 or 10 feature that was misinterpreted by Win XP.

IMHO, thems the risks that we users take when trying to stick with tried-and-true older versions of products that MSFT wants to obsolete.

In their defense (relunctantly), one purpose of obsoleting products is to avoid testing with them when the O/S (or Office) is updated. Undetected incompatibilities are inevitable.

PS.... And now, things are so bad that we cannot even ask questions about older versions of Excel or Win without getting a knee-jerk lecture (emphasis on "jerk") about the old version being "out of support" (as if we don't know?!) and instructions for upgrading. I am starting to report all such responses as "abuse", since I consider them to be "harassment". "A word to the wise....".

Reinstall should be qualified with the line that provided you have serial key for the product as Office 2003 was dependent upon old style license serial keys.

Meanwhile, user can make use of Excel online which will be a poor substitute though and can provide all basic functionalities.

Hi,

Thank you for reaching out to us today. I’m Kevin and I’m happy to to help you out with your question.

Office 2003 is no longer supported by Microsoft so it’s difficult to know for sure if the issue is fixable. Microsoft Office 2003 comes with an easy repair option which can be launched from the Help menubar, select “Detect and Repair” and click the Start button.

I also suggest that you try reinstalling office.

I hope this information is helpful. If you have any further questions or need additional assistance, please reach back out and I will be more than happy to assist you.

Best Regards, Kevin