Vista can't use input method normally, how to solve

UIPI blame

If the IE add-in needs to send Windows messages to external processes, it will be blocked. This is due to the role of UIPI, which only allows advanced processes to send messages to peer or low-level processes. This is somewhat similar to previous underground parties, allowing only superiors to contact subordinates (single line contact). But this may affect some old input methods and cause them to not work properly.

Workaround: Modify the input method to allow external processes to accept specified Windows messages. Or use a security mechanism such as RPC to communicate between the IE process and the advanced process.

At present, you can only manually modify the system, forcibly disable UIPI, and ensure the compatibility of the input method. However, this will weaken the security of the system, and it will also castrate the function of the IE protection mode (although the system prompts that the IE protection mode is still working, it has been greatly weakened).

In HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System, create a new DWORD key value EnableUIPI, set to 0.

Restart the system and test it a few times. It should solve the problem of similar purple pinyin and pinyin, and it is a true "complete" solution.

One mountain does not allow two tigers

The IE process in protected mode runs at the "low" level, so it cannot be written to the user profile area, thus preventing malicious web pages from corrupting user and system data. At the same time, IE will automatically redirect this write operation to a specific area. This ensures security while keeping IE components and add-ons up and running.

But if the IE add-in must share data with an "intermediate" process, then there may be problems because the data accessed by the IE process (add-in) is actually redirected. And "intermediate" will still go to the original location, which may lead to errors.

Workaround: Modify these add-ons to have access to a specific zone at the same time as external processes; or let external processes run at the "lower" level.

In addition, you can manually modify the system to set the shared area to allow "lower" process access.