Preview an attachment

I need to check the spreadsheet Kevin sent before opening it fully. Preview the attachment SalesForecast_Q3.xlsx from Kevin Li’s email so I can confirm it’s the latest version and not a malicious file. If the preview shows the expected sheet 'Q3 Plan' and the totals look reasonable, notify me; otherwise download for full inspection.

Before I forward Kevin’s spreadsheet to finance, surface the preview information that reviewers care about. Show which sheet is active, the top three rows and columns, any external links or macros, and the last modified timestamp. Flag if the file contains macros, external data connections, or looks larger than expected so a reviewer can decide whether to open it fully.

Kevin Li sent SalesForecast_Q3.xlsx but the inline preview spins and then shows an error. I’m worried the file has macros or external links that the preview blocks, and finance needs the numbers for tomorrow’s meeting. I don’t know whether it’s safe to download or if I should ask Kevin to resend a sanitized copy. What’s the quickest safe step to get the needed view without exposing my machine to risk?

Over the past two months I keep downloading spreadsheets to view content because the inline preview often fails or hides macros, which wastes time and risks version confusion. Where is the recurring failure — relying on previews for large files, inconsistent sender formatting, or lack of a standardized exchange format — and what single change (for example, a required CSV export, a standard naming convention, or a sender checklist) will cut this friction?