pywinauto gives RuntimeError: SendInput() inserted only 0 out of 2 keyboard events on Webex teams

Question

Running pywinauto using python script through Task scheduler gives the following error. pywinauto version - 0.6.8 Python version - 3.12.0 Windows 10 (Virtual desktop)

Traceback (most recent call last): File "C:\Dashboard_checks\automation\dash_check_final.py", line 144, in sendWebexMessage(arrayStatus) File "C:\Dashboard_checks\automation\dash_check_final.py", line 82, in sendWebexMessage main_dlg.type_keys(msg_text,with_spaces=True,with_newlines=True,pause=0.1,with_tabs=True) File "C:\Users\AppData\Local\Programs\Python\Python312-32\Lib\site-packages\pywinauto\base_wrapper.py", line 964, in type_keys keyboard.send_keys( File "C:\Users\AppData\Local\Programs\Python\Python312-32\Lib\site-packages\pywinauto\keyboard.py", line 713, in send_keys k.run() File "C:\Users\AppData\Local\Programs\Python\Python312-32\Lib\site-packages\pywinauto\keyboard.py", line 411, in run raise RuntimeError('SendInput() inserted only ' + str(num_inserted_events) + RuntimeError: SendInput() inserted only 0 out of 2 keyboard events

app = Application(backend="uia").connect(title_re=".*Webex")

main_dlg = app.top_window()
main_dlg.wait('visible')


def sendWebexMessage(arrayStatus):

    date_format = '%Y/%m/%d %H:%M:%S'
    dt_format   = '%d/%m/%Y %H:%M:%S'

    logging.info("sendWebexMessage:START")
    main_dlg.set_focus()
    #main_dlg.wait('visible')
    main_dlg.wait('enabled')
    
    time.sleep(15)
    logging.info("sendling Ctrl+Alt+I key")
    try:
        # sendling Ctrl+Alt+I key.
        # set focus on message window of Webex
        main_dlg.type_keys('^%I')

    except:
        logging.warning("sendling Ctrl+Alt+I key:Error")
            
    time.sleep(5)
    
    logging.info("sendling Z and Enter key")
    try:
        main_dlg.type_keys("Z")
        main_dlg.type_keys('{ENTER}')
    except:
        logging.warning("sending Z and Enter key:Error")


    for i in range (0,10): 
    
        logging.info("msg_text:"+msg_text)
        #print("msg_text:",msg_text)
        
              main_dlg.type_keys(msg_text,with_spaces=True,with_newlines=True,pause=0.1,with_tabs=True)
        main_dlg.type_keys('+{ENTER}')

    main_dlg.type_keys("\n",with_spaces=True,with_newlines=True,pause=0.1,with_tabs=True)

    logging.info("sendWebexMessage:END")

Edit 1: The code works if it is run manually.

Edit 2: The task is being scheduled using the "Task Scheduler" GUI program

I am scheduling the program using a Batch (.bat) file The command in the batch file is as follows:

"C:\Users\AppData\Local\Programs\Python\Python312-32\python.exe" "C:\automation\dash_check_v1.py"  > %LOGFILE% 2>&1

If I run the task immediately using the "Run" command within the Task Scheduler GUI the script works without any issue. The issue occurs when I schedule it at a later time.