A policy that looks broken five minutes after saving usually isn’t. Three documented timing and scoping behaviours explain almost every ‘why isn’t this working’ report before you touch the configuration.
A sensitivity label on a file doesn’t extend to a copy of it dropped into a prompt. Microsoft’s own words: evaluation of the uploaded file for sensitive data doesn’t occur, at all.
In Word, Excel and PowerPoint the check runs at file open, not continuously, so a label applied mid-session doesn’t block anything until you reopen the file. Plus what the coverage does and doesn’t include.
Twenty source items total, and images, recordings and OneNote still aren’t readable. Plus the permission trimming that makes one agent answer the same question differently depending only on who’s asking.
Print double-sided documents using automatic duplex or manual page-flipping, and choose the correct binding edge so pages don’t come out upside down.
Resize an image on Mac or Windows without stretching it, using the aspect ratio lock, and see why enlarging past the original size always loses some quality.
Burn a CD on Windows — choose Audio CD format for a disc that needs to play in a car stereo, or a data disc for files, and avoid the most common mix-up.
Zip files on Windows or Mac using built-in tools, combine several files into one archive, and understand when zipping actually reduces file size at all.
Convert JPG images to PDF on Mac or Windows using built-in tools, and combine several images into one multi-page PDF document instead of separate files.
Scan a document with just your phone using the built-in Notes or Google Drive scanner, and get a clean, usable result without needing a dedicated scanner.