This MSKB seems to be the opposite of your issue. Please review thebelow. Ensure that the "Do not check spelling or grammar" option is NOT checked.
"Text marked do not check spelling or grammar was skipped." - Technology Questions
The
Do not check spelling or grammar option formats the selected text so that spelling and grammar errors are ignored within the selection. Spelling and grammar errors continue to be identified in the rest of the document. The
Do not check spelling or grammar formatting remains with the selected text until you remove it by highlighting the text and then clearing the
Do not check spelling or grammar check box.
To set the
Do not check spelling or grammar option in Word, do the following steps: 1.Select the text or paragraph you do not want Word to check.2.On the
Tools menu, point to
Language and then click
Set Language.3.In the
Language dialog box, click to select the
Do not check spelling or grammar check box and then click
OK.When you set the
Do not check spelling or grammar option on a selected paragraph, Word may not display the following message after Word completes checking your document for spelling and grammar errors:
The spelling and grammar check is complete. Text marked with "Do not check spelling or grammar" was skipped.