How can I search for a file when I remember only part of its name?

Start with the most distinctive word or uninterrupted string you remember. If the file might be named Q3-vendor-review-draft.docx, useful first searches could be vendor, review, or vendor-review. These are example search terms, not special commands.

In Windows File Explorer, enter the fragment in the search field while viewing a likely folder. Microsoft says File Explorer accepts full or partial keywords and searches the current folder and its child folders by default; it also advises using specific words from a filename. [S1]

On a Mac, use Finder’s search and add a criterion set to Name, then enter the remembered word or phrase. Apple documents finding items whose names contain that word or phrase. [S2]

First try the folder you think is most likely, using a distinctive fragment. If that does not find the file, broaden the search location rather than changing to a complicated filename pattern.

In File Explorer, the default search covers the folder you are viewing and its child folders. If the file may be outside that area, change the search scope using Search options. [S1] In Finder, use the search criteria to narrow results; Apple documents adding criteria and choosing how multiple criteria are matched. [S2]

For example, if you cannot remember whether a document is in Projects or Shared work, search each likely location for vendor-review. Keeping the same search term while changing the location helps you tell whether the folder scope was the problem.

Do not assume that * or ? works as a general filename wildcard in your file manager. The cited Microsoft guidance supports ordinary full or partial keywords in File Explorer, but does not establish wildcard behavior. Apple’s Finder guidance describes searching by a word or phrase in the Name criterion and does not document wildcard patterns. [S1] [S2]

Try plain searches instead:

1. Remembered word: invoice
2. Distinctive fragment: client-42
3. Phrase you recall: meeting notes

If those return too many results, add another remembered word or use the app’s available search criteria. A wildcard may behave differently in other tools or versions; these sources do not establish support for it across platforms.

Use this sequence, changing one thing at a time:

1. Choose the most distinctive word or continuous fragment you remember.
2. Search it in the folder most likely to contain the file.
3. If no result appears, broaden the location or check another likely folder.
4. If there are too many results, add a second remembered word or refine by name and other available criteria.
5. Try a phrase you recall, but do not rely on wildcard symbols unless your particular app documents how they work.

Worked example: You remember that a spreadsheet was called something like April inventory final, but you do not know its full name. Search inventory in the likely folder. If there are too many matches, try April inventory; if there are none, broaden the folder scope and try inventory again. In Finder, make sure the criterion is Name; in File Explorer, remember that the initial scope is the current folder and its child folders. [S1] [S2]

This method cannot identify a file whose name fragment and location are both unknown. The cited guidance also does not establish wildcard support or identical search behavior across other file managers.