Windows Update caused Microsoft Bopomofo IME to lose candidate words

Anna Chen 0 Reputation points
2026-05-18T07:29:15.97+00:00

After a recent Windows update, the Microsoft Bopomofo (注音) IME stopped showing correct or complete candidate words. I can type ㄅㄆㄇ symbols, but the candidate list is incomplete or missing correct characters. I have already tried the following steps, but the issue persists:

Restarted Windows multiple times

Ran ctfmon.exe

Reinstalled Microsoft Bopomofo IME

  • Reset IME settings
  • After a recent Windows update, the Microsoft Bopomofo (注音) IME stopped showing correct or complete candidate words. I can type ㄅㄆㄇ symbols, but the candidate list is incomplete or missing correct characters. I have already tried the following steps, but the issue persists:

Restarted Windows multiple times

Ran ctfmon.exe

Reinstalled Microsoft Bopomofo IME

  • Reset IME settings
    • Expected behavior: Bopomofo IME should show complete and correct candidate words. Actual behavior: Candidate list is incomplete or missing correct characters. Impact: Severely affects productivity for Traditional Chinese users.
    • It cost me lots of time to do it,but no results.
Windows for home | Windows 11 | Windows update
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  1. AI answer

    2026-05-18T07:30:00.9633333+00:00

    Follow these steps to work around IME issues introduced by recent Windows updates:

    1. Open IME settings for Traditional Chinese:
      • Select Start, type IME settings, and open it.
      • Choose the IME settings that match Traditional Chinese Microsoft Bopomofo IME.
    2. Enable the previous (compatibility) version of the IME:
      • In the Bopomofo IME settings, select General.
      • Turn on Use previous version of Microsoft IME.

    This enables the older, compatible Bopomofo IME, which can mitigate issues such as incorrect or incomplete candidate lists caused by recent updates. This is intended as a temporary workaround until the updated IME is fixed.

    If the Bopomofo keyboard layout is missing after your changes or updates:

    1. Go to Start > Settings > Time & language > Language (or use the Language shortcut: ms-settings:regionlanguage).
    2. Under Preferred languages, select the Traditional Chinese language in use and choose Options.
    3. Under Keyboards, ensure Microsoft Bopomofo is present. If not, add it as a keyboard layout following the guidance in Manage the language and keyboard/input layout settings in Windows: Add a keyboard layout.

    If the direct shortcuts to Bopomofo settings (for example ms-settings:regionlanguage-bpmfime) do not work, the keyboard layout is not installed and must be added as above.

    For persistent issues or to help improve the IME, submit feedback:

    1. Right-click the IME options icon in the taskbar and select Send Feedback, or
    2. Use the Feedback Hub shortcut: https://aka.ms/inputfeedback and follow the steps in Send feedback with the feedback hub app.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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