On Windows 11, importing files that include Chinese characters may fail due to how legacy non-Unicode applications handle encoding. These characters may be found:
- in the file name of the imported file, or
- inside the text content of the imported file
To resolve this issue, enable UTF-8 support for non-Unicode programs. To enable support, follow the steps below:
- Open Settings by performing one of the following:
- Press WinI , or
- Click Start Settings.
- To update the language settings, go to:
-
Time & language Language & region
- Navigate to the Related settings section:
- Select Administrative language settings
- The classic Region dialog opens.
- In the Region dialog:
- Select Change system locale…
- Then, check Beta: Use Unicode UTF-8 for worldwide language support.
- Click OK to enable UTF-8 for non-Unicode programs.
- Restart Windows to save your work and apply the change.

Note the following behavior:
- This setting is system-wide and primarily affects legacy non-Unicode applications and some file name handling.
- You can revert by returning to Change system locale… and clearing the UTF-8 option.
- Administrator privileges may be required.