If the document text itself is showing as Chinese or another East Asian script, the most common cause in the available guidance is missing East Asian fonts or language support on Windows.
Try this on Windows 10:
- Select Start > Settings > Time & language.
- Select Region & language.
- Select Add a language.
- Add the East Asian language needed for the document. Windows downloads the related fonts.
This does not necessarily change the default Windows language. It adds the language resources and fonts so the document can display correctly.
If the issue is only in Office for certain shared documents, Office may be substituting fonts because the original East Asian fonts are not installed. Adding the language and associated fonts is the documented fix for that scenario.
If the problem is in Word and the file was saved with the wrong text encoding, Word normally uses Unicode by default because it supports most characters in most languages. Files saved in a different encoding can display characters incorrectly.
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