When starting Unikey, the error message A previous instance of Unikey is already running means that the software has detected that you are already running another version of Unikey on the computer so how to handle the error a previous instance of Unikey is already running is also very simple when you just need to turn off the old running version.
How to handle the error “A previous instance of Unikey is already running” cannot open Unikey
Step 1: Right-click on the Taskbar Unikey icon choose End to turn off Unikey. You should normally be able to handle the “A previous instance of Unikey is already running” error in this step. However, to be more sure you should continue to the next steps.
Step 2: Right-click on the selected Taskbar Task Manager to check if there are any processes (Process) of Unikey still running in the background or not.
Step 3: If unikey progress is detected. Right click on the process and select it End task to turn off Unikey completely.
After completely shutting down Unikey, you can handle the error “A previous version of Unikey is already running” that could not open Unikey and continue to use this tool to type Vietnamese as usual.
If you feel that you still have many difficulties to use and get acquainted with Unikey, you can switch to Vietkey. Vietkey software is present in front of Unikey and is a software that supports accented Vietnamese typing with a variety of powerful encodings. Good luck !