Hi @Olu. After updating Docker (Windows) and system restart, I was able to successfully save the tyk.conf file with the whitelisted ports. After saving i tried to run the API via Tyk, but it still return 404-Not found. I have shared the Docker logs below for your reference.
time="Aug 13 11:42:32" level=info msg="API bind on custom port:11128" prefix=main
time="Aug 13 11:42:32" level=error msg="Can't start listener" error="tcp:11128 trying to open disabled port" prefix=main
time="Aug 13 11:42:32" level=info msg="Initialised API Definitions" prefix=main
time="Aug 13 11:42:32" level=info msg="API reload complete" prefix=main
time="Aug 13 11:42:32" level=info msg="reload: complete" prefix=main
time="Aug 13 11:42:32" level=info msg="Initiating coprocess reload" prefix=main
time="Aug 13 11:42:32" level=info msg="Reloading middlewares" prefix=coprocess
time="Aug 13 11:42:32" level=info msg="coprocess reload complete" prefix=main
time="Aug 13 11:42:32" level=info msg="reload: cycle completed in 86.4426ms" prefix=main
time="Aug 13 11:43:11" level=info msg="Reloading endpoints" prefix=pub-sub
time="Aug 13 11:43:11" level=info msg="Reload queued" prefix=main
time="Aug 13 11:43:12" level=info msg="reload: initiating" prefix=main
time="Aug 13 11:43:12" level=info msg="Loading policies" prefix=main
time="Aug 13 11:43:12" level=info msg="Using Policies from Dashboard Service" prefix=main
time="Aug 13 11:43:12" level=info msg="Mutex lock acquired... calling" prefix=policy
time="Aug 13 11:43:12" level=info msg="Calling dashboard service for policy list" prefix=policy
time="Aug 13 11:43:12" level=info msg="Processing policy list" prefix=policy
time="Aug 13 11:43:12" level=info msg="Policies found (3 total):" prefix=main
time="Aug 13 11:43:12" level=info msg="Detected 4 APIs" prefix=main
time="Aug 13 11:43:12" level=info msg="Loading API configurations." prefix=main
time="Aug 13 11:43:12" level=info msg="Tracking hostname" api_name=ibmUsingNgrok domain="(no host)" prefix=main
time="Aug 13 11:43:12" level=info msg="Tracking hostname" api_name=OAuthApi domain="(no host)" prefix=main
time="Aug 13 11:43:12" level=info msg="Tracking hostname" api_name=ownApi domain="(no host)" prefix=main
time="Aug 13 11:43:12" level=info msg="Tracking hostname" api_name=tcp domain="(no host)" prefix=main
time="Aug 13 11:43:12" level=info msg="Initialising Tyk REST API Endpoints" prefix=main
time="Aug 13 11:43:12" level=info msg="API bind on custom port:0" prefix=main
time="Aug 13 11:43:12" level=info msg="Checking security policy: Open" api_id=ff397e6f6d4545465c7faeec0d1f7824 api_name=ibmUsingNgrok org_id=6110d2c856a2ac00017a6f31
time="Aug 13 11:43:12" level=info msg="API Loaded" api_id=ff397e6f6d4545465c7faeec0d1f7824 api_name=ibmUsingNgrok org_id=6110d2c856a2ac00017a6f31 prefix=gateway server_name=-- user_id=-- user_ip=--
time="Aug 13 11:43:12" level=info msg="API bind on custom port:0" prefix=main
time="Aug 13 11:43:12" level=info msg="Checking security policy: OAuth" api_id=7408e04130fc48ec79054e4878b7c3a9 api_name=OAuthApi org_id=6110d2c856a2ac00017a6f31
time="Aug 13 11:43:12" level=info msg="API Loaded" api_id=7408e04130fc48ec79054e4878b7c3a9 api_name=OAuthApi org_id=6110d2c856a2ac00017a6f31 prefix=gateway server_name=-- user_id=-- user_ip=--
time="Aug 13 11:43:12" level=info msg="API bind on custom port:0" prefix=main
time="Aug 13 11:43:12" level=info msg="Checking security policy: OpenID" api_id=676bbe26e0ca4cda61fa68f4ccbb476e api_name=ownApi org_id=6110d2c856a2ac00017a6f31
time="Aug 13 11:43:12" level=info msg="API Loaded" api_id=676bbe26e0ca4cda61fa68f4ccbb476e api_name=ownApi org_id=6110d2c856a2ac00017a6f31 prefix=gateway server_name=-- user_id=-- user_ip=--
time="Aug 13 11:43:12" level=info msg="API bind on custom port:11128" prefix=main
time="Aug 13 11:43:12" level=error msg="Can't start listener" error="tcp:11128 trying to open disabled port" prefix=main
time="Aug 13 11:43:12" level=info msg="Initialised API Definitions" prefix=main
time="Aug 13 11:43:12" level=info msg="API reload complete" prefix=main
time="Aug 13 11:43:12" level=info msg="reload: complete" prefix=main
time="Aug 13 11:43:12" level=info msg="Initiating coprocess reload" prefix=main
time="Aug 13 11:43:12" level=info msg="Reloading middlewares" prefix=coprocess
time="Aug 13 11:43:12" level=info msg="coprocess reload complete" prefix=main
time="Aug 13 11:43:12" level=info msg="reload: cycle completed in 97.7359ms" prefix=main