Hi 

I be glad if you share me your project 

i update frimware from V2.9.2 to V2.9.7

also i update time on PLC

Maybe i use plc with safety this is problem 

KElie

Ip 10.0.0.55 

DNS 10.0.0.138 

pc configuration 

Connection-specific DNS Suffix:

Description: Lenovo USB Ethernet

Physical Address: ‎CC-48-3A-8F-67-15

DHCP Enabled: No

IPv4 Address: 10.0.0.22

IPv4 Subnet Mask: 255.255.255.0

IPv4 DNS Server: 10.0.0.138

IPv4 WINS Server:

NetBIOS over Tcpip Enabled: Yes

IPv6 Address: 2a06:c701:704c:a400:960c:9645:1cf5:666a

Temporary IPv6 Address: 2a06:c701:704c:a400:619a:cf29:8341:131b

Link-local IPv6 Address: fe80::1925:3256:b197:1926%19

IPv6 Default Gateway: fe80::2b8:c2ff:fe0e:d2c9%19

IPv6 DNS Server: 2a06:c701:704c:a400::1

plc configuriton 

ip address 10.0.0.55

subnet mask 255.255.255.0

dns configiuration on plc 

name resolution via dns _ set dns server in the project

Dns server addresses 10.0.0.138

Yes i did if i take Url  from InstTelegramPushNotification DB check it on browser add. 

it is work 

Thanks you verymuch my friend 

I found what is it the proplem 

The Trusted certification only by google chrome browser 

mine was from ms edge

Very Good

hello, If you still have a project for S7-1200, can you send it?

I face the same error. Reading #8701 when Sendmessage bit Set.

Most probably might be due to the Server and Client Certificates. See the last page of my ppt.

Attached with some important Settings to take note in my ppt. Attached with the PLC program in S7-1200