Office 365 update may fail because of missing proofing tools binaries for some of the languages.
ITMS 8.x
Patch Management Solution 8.x
Symantec/Broadcom extended the scope of the Office 365 bulletins to include proofing tools for additional languages starting from the September 2021 Patch Tuesday.
This was fixed in the Patch Data starting from 7.3.849 version on September 10, 2021
If the Office 365 updates were already deployed and failing after the September 2021 Patch Tuesday, restart the Symantec Management Agent on the targeted computers, or alternatively, if you might be still running on Patch Management Solution 8.5 RU4, apply the point fix SMA_SMP_8_5_POST_RU4_v6 found in CUMULATIVE POST ITMS 8.5 RU4 POINT FIXES.
For a related issue, see Patching of Office 365 in languages not available in Patch Data import UI.