Windows Search feels fast for file lookups because of a background indexing service — understanding how it works helps diagnose the occasional “why can’t Windows find this file” frustration.
# Check indexing status Get-Service WSearch # Rebuild the index if search results seem stale or wrong # (Settings > Search > Searching Windows > Advanced indexing options > Rebuild) # View which locations are actually indexed Start-Process "ms-settings:cortana-windowssearch"
Why Some Files Never Show Up in Search
Windows Search only indexes specific locations by default (user profile, Documents, Desktop) — files on a secondary drive or in a location outside the default index scope won’t appear in Start menu search results at all, regardless of how exact the search term is, until that location is explicitly added to the indexed locations list.
Content Indexing vs Filename Indexing
By default, most file types are indexed by filename only; a smaller set of types (Office documents, PDFs, plain text) are also indexed by their actual content, letting you search for text inside a document — this content indexing can be extended to more file types via the Advanced indexing options, though it does increase indexing time and disk usage.