A document may need a particular font family and several styles, such as regular and bold. Start with the exact requirement and an authorised source for the font. A similarly named substitute can change line breaks and the space needed by headings.

Keep a copy of the original document before adjusting its typography. This gives you a reference for judging whether the intended layout has been restored.

Confirm what Windows has installed

Open Settings, Personalization, Fonts and search Available fonts. Use the preview to inspect the family and faces already present before installing another copy.

Microsoft supports font installation from TrueType or OpenType files, normally ending in .ttf or .otf. Extract a downloaded ZIP first. Right-click the intended font file and choose Install; Install for all users is a separate choice when that scope is required and authorised.

Approve a permission prompt only after verifying the source. Keep the supplier and licence information with the project, particularly when the eventual document will be shared or used commercially.

Test the intended application and document

Return to Fonts settings and confirm that the family appears. Then open the target application and select the required family and style in a working copy of the document.

Microsoft notes that not every application supports custom fonts. If the font is visible in Windows but absent in one program, test another suitable application and consult the first program’s font guidance. Repeatedly reinstalling an identical file may not answer that compatibility question.

Inspect a representative page with headings, body text, numbers and any special characters. Check line wrapping, missing symbols and whether bold or italic appears as intended.

Save and reopen the working document, and inspect any PDF or printed output that forms part of the deliverable. Installation on your PC does not establish that another recipient has the same font or that the licence allows embedding.

Keep the original document until those checks pass. The useful result is correct typography in the actual workflow, rather than only a successful installation message.

Sources: Microsoft Windows font management.