Hi!

BR

Cookie_M0nster

Hi!

Ensure that your certificates are up-to-date "No connection to the OPC UA server after WinCC Update".

Make sure that you have correctly configured the connection parameters, including the security policy and mode "Creating a connection to the OPC UA server".

BR

Thankyou for your answer Update my problem

1. New PC  Wincc 8.0 (Old PC Install Wincc 7.5 set OPC UA Client and connect KepserverEX OPC UA Server )

2. New PC Create Certificate from "Wincc Certificate Manager"

3. Install certificate from Kepserver EX position same  Old PC

4.When Connect  setup "security setting" to None  my Connection can Browse Tag But if setup "security setting" to Security Policy : Basic256Sha256,Security mode:SignAndEncrypt ( same Old PC Wincc 7.5) An error  occurred while loading the AS Symbols. Note:Unnable to connect to server.Error from server The host name used to connect to a server does not match any host name in the certificate 

Hello AutoGen_8877347

Check also in the rejected folders if there is a rejected OPC Server certificate in WinCC:

https://support.industry.siemens.com/cs/de/en/view/109976723/165322072971

Bye Murof

Murof

Hello AutoGen_8877347

Check also in the rejected folders if there is a rejected OPC Server certificate in WinCC:

https://support.industry.siemens.com/cs/de/en/view/109976723/165322072971

Bye Murof

Thankyou 

No Certificate in root rejected

For Certificate from "Wincc Certificate manager" I'm not sure to install in root 

1.CA = certificate authority

root C:\Program Files(x86)\Siemens\WinCC\opc\UAClient\PKI\Issuers\cert

2.CRL = Certificate Revocation List

root C:\Program Files(x86)\Siemens\WinCC\opc\UAClient\PKI\Issuers\crl

3.OPC UA client certificate

root C:\Program Files (x86)\Siemens\WinCC\opc\UAClient\PKI\OPCUA\certs

4.OPC UA Tags Importer certificate

root C:\Program Files (x86)\Siemens\WinCC\opc\UAClient\PKI\OPCUA\certs

     Befor Install in root I'm install certificate in the Trusted Root Certification Authorities store