Hi Wasin.I did not. After I posted my last response I gave up as my original ticket sent me here in the first place. About a week later it started working all by itself.

Hello @Martin.Miller

Have you checked the answer of the similar question?

@Martin.Miller

Please try to enable Eikon Data APIs log with the below code.

import logging
logger = logging.getLogger('pyeikon')
logger.setLevel(5)
ek.set_app_key('appkey')

I got the following log when Eikon Proxy API uses 9001 port instead of 9000 port.

2020-05-08 14:09:16,394 P[34436] [MainThread 31912] Set App Key: xxx
2020-05-08 14:09:17,411 P[34436] [MainThread 31912] Error on checking port 9000 : ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))
2020-05-08 14:09:17,412 P[34436] [MainThread 31912] Warning: file .portInUse was not found. Try to fallback to default port number.
2020-05-08 14:09:17,414 P[34436] [MainThread 31912] Try defaulting to port 9000...
2020-05-08 14:09:18,432 P[34436] [MainThread 31912] Error on checking port 9000 : ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))
2020-05-08 14:09:18,434 P[34436] [MainThread 31912] Try defaulting to port 36036...
2020-05-08 14:09:20,442 P[34436] [MainThread 31912] Error on checking port 36036 : HTTPConnectionPool(host='localhost', port=36036): Max retries exceeded with url: /api/v1/data (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x00000238A19ADF98>: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))
2020-05-08 14:09:20,443 P[34436] [MainThread 31912] Try to handshake on url http://localhost:None/api/handshake...
2020-05-08 14:09:20,444 P[34436] [MainThread 31912] Error on handshake port None : Failed to parse: localhost:None
2020-05-08 14:09:20,445 P[34436] [MainThread 31912] Set Proxy port number to None
2020-05-08 14:09:20,446 P[34436] [MainThread 31912] Unlock login_event for streaming session 0 due to stop streaming call
2020-05-08 14:09:21,466 P[34436] [MainThread 31912] Error on checking port 9000 : RemoteProtocolError("can't handle event type ConnectionClosed when role=SERVER and state=SEND_RESPONSE")
2020-05-08 14:09:21,467 P[34436] [MainThread 31912] Warning: file .portInUse was not found. Try to fallback to default port number.
2020-05-08 14:09:21,468 P[34436] [MainThread 31912] Try defaulting to port 9000...
2020-05-08 14:09:22,487 P[34436] [MainThread 31912] Error on checking port 9000 : RemoteProtocolError("can't handle event type ConnectionClosed when role=SERVER and state=SEND_RESPONSE")
2020-05-08 14:09:22,488 P[34436] [MainThread 31912] Try defaulting to port 36036...
2020-05-08 14:09:24,497 P[34436] [MainThread 31912] Error on checking port 36036 : ConnectionError(OSError("Multiple exceptions: [Errno 10061] Connect call failed ('::1', 36036, 0, 0), [Errno 10061] Connect call failed ('127.0.0.1', 36036)"))
2020-05-08 14:09:24,498 P[34436] [MainThread 31912] Error: no proxy address identified.
Check if Eikon Desktop or Eikon API Proxy is running.
2020-05-08 14:09:24,499 P[34436] [MainThread 31912] Port number was not identified, cannot send any request
2020-05-08 14:09:24,500 P[34436] [MainThread 31912] Port number was not identified.
Check if Eikon Desktop or Eikon API Proxy is running

It turns out that the value of TCP port in C:\Users\<user>\AppData\Roaming\Thomson Reuters\Eikon API Proxy\.portInUse is still 9000.