The final file often passes through several good people. That is exactly why small leftovers survive. One person owns the numbers, another edits the wording, and someone else exports the delivery copy. A preflight gives the last handoff a clear owner and a repeatable order.
Lock the copy you are actually sending.
Reviewing the working file is not enough if someone exports, renames, or edits it afterward. Put the final candidate in one delivery folder. Review that folder, then avoid making silent changes.
Include only files the recipient needs. Keep drafts, source exports, notes, and archives somewhere else.
Remove version labels such as FINAL-v7-new. Use a stable name that makes sense to someone outside the team.
Clear the conversation that helped make the file.
Comments, speaker notes, tracked changes, hidden text, and internal instructions are useful during collaboration. The delivery copy needs a separate decision about each one.
Turning off tracking or choosing No Markup changes the view. It does not resolve changes that remain in the file.
Check PowerPoint speaker notes, hidden Word text, hidden sheets, comments, and internal-only instructions.
Make sure the spreadsheet still works outside your environment.
A workbook can look correct while depending on another file, a hidden sheet, or a stale calculated value. The safest question is simple: what will the recipient see when they open this on a different machine?
Resolve #REF!, #VALUE!, #DIV/0!, and similar errors. Recalculate the final copy before reading the output again.
Do not break links automatically. Confirm whether the recipient needs the source, a fixed value, or an embedded copy.
Confirm who the file is for.
Search the full delivery folder for previous client names, internal codenames, template markers, placeholder dates, and draft labels. Check headers, footers, charts, notes, file properties, and hidden parts too.
proposal.docx / document.xmlReplace the template marker with approved final content, then rescan the delivery copy.
Include variations, abbreviations, bracketed fields, filler copy, unfinished task labels, and internal status notes.
Match the brief or approved source. Do not infer the intended value from nearby text.
Give important numbers somewhere to stand.
For each material claim, check the period, unit, definition, comparison base, and source. The number may be correct and still be hard for a reviewer or recipient to verify.
Keep citations close enough that the relationship is clear. Confirm the source supports the wording you used.
Compare the deck, proposal, workbook, appendix, and email summary. Repeated numbers should agree.
Inspect what the page does not show.
Run the current Microsoft Document Inspector on a copy. Review document properties, personal information, comments, hidden data, custom XML, external content, and embedded objects. Then check your own policy for credentials, private URLs, and client-specific restricted terms.
Review every Inspector result before choosing Remove All. Some information is intentional, and some removal cannot be undone.
If a real secret appears, revoke it first. Removing the visible text does not make an exposed credential safe again.
End with a named decision.
A checklist is useful when it changes what happens next. Record the final file, the reviewer, the scope, and one of three outcomes.
No issue was found under the checks and scope you ran. The accountable reviewer still owns the delivery.
Something needs context. Confirm the intent, evidence, or recipient environment before sending.
A release issue needs to be fixed or explicitly accepted by the owner before the file leaves the team.