In Microsoft Word, the spell checker is typically found under the Review tab in the ribbon. You can click on the Spelling & Grammar button in the Proofing group to start the spell check process. Additionally, you can enable the option to check spelling as you type by going to File > Options > Proofing and ensuring that the Check spelling as you type option is selected.
In Microsoft Outlook, the spell checker is also accessible from the Review tab when composing an email. You can click on Spelling & Grammar to check the spelling in your email. Similar to Word, you can enable spell check while typing by going to File > Options > Mail > Spelling and Autocorrect and ensuring the relevant options are checked.
If you are unable to find the spell checker, ensure that the proofing tools are installed and enabled for your language settings.