Does the font have a DSIG table?
Microsoft Office 2013 and below products expect fonts to have a digital signature declared in a DSIG table in order to implement OpenType features. The EOL date for Microsoft Office 2013 products is 4/11/2023. This issue does not impact Microsoft Office 2016 and above products.
This checks verifies that this signature is available in the font.
A fake signature is enough to address this issue. If needed, a dummy table can be added to the font with the gftools fix-dsig script available at https://github.com/googlefonts/gftools