Hi!

Version: STDERP_8.5-2019-09-15-1019

I try to install SERP server on the Windows 2012R2 machine.
After installation, I can't connect with SERP client. I get error msg "Server not responding on that IP and port". SERP server is running on port 1200 and Client is on the same machine, but I can't connect to the server. (I tried to connect with IP 127.0.0.1 and port 1200) Server is with demo data.
On this windows server is Windows Firewall, I allowed Inbound TCP 1200

hansa.log:
2019-11-26 13:48:08 Windows Service version
2019-11-26 13:48:08 Starting application...
2019-11-26 13:48:08 *** running with new mail receiving and parsing ***
2019-11-26 13:48:08 *** using a freelist to keep track of free space ***
2019-11-26 13:48:08 Database ID changed from: 00000000000000000000000000000000 to: A5A4EB00465566DC1125DB1793C65383
2019-11-26 13:48:08 Database ID changed from: A5A4EB00465566DC1125DB1793C65383 to: B7E831AD9DDD715C4AA0A97E529E3407

2019-11-26 13:48:08 Duration in seconds: 0

2019-11-26 13:48:08 File Imported GBR/DBDEF.TXT
2019-11-26 13:48:08 FIREWALL: Add failed: 80070005
2019-11-26 13:48:08 Listening on port: 1200 (Clients)
2019-11-26 13:48:15 Listening on port: 1080 (HTTP)
2019-11-26 13:48:15 Importing text file: GBR-Sample.TXT
2019-11-26 13:48:22 Duration in seconds: 6
2019-11-26 13:48:22 File Imported GBR-Sample.TXT

2019-11-26 13:48:23 Server process running

2019-11-26 13:48:23 8.5 2019-09-15 (build 85321019)
2019-11-26 13:48:23 Close database

2019-11-26 13:48:23 Quitting application...


parameters.txt
--port 1200
--webport 1080


"2019-11-26 13:48:08 FIREWALL: Add failed: 80070005"
Question:
What is that number that SERP wants to add to the firewall? What does this error message mean?