Hi Stefan,

This was helpful and new information for me. After investigating this information further, i'm still having the same issue. When I navigate to the webpage Localhost, I have the three options "WinCC Unified RT" which when I click, shows the message "Runtime not active Automatic reconnect in x seconds".

This, I'm assuming is because I have not been able to successfully download to the 127.0.0.1 address.

Also, the program "SIMATIC Runtime Manager" indicates a fault - "General error during processing".

Thank-You

Hello 

Can you provide us with screenshots of yourrUnified Certificate manager and the error you get in Runtime Manager, or what do you get in Browser?

do you have first create a certificate authority with all the used certificates (for example for Webserver), then rerun the winCC Unified configuratino with the new Certificate. If you do not use Name resolution you can also use the "only use IP Address option"

Bye Murof

Hello,

Please find attached all the requested screen captures. I haven't stumbled upon any procedure related to the certificates. If you could point me to one, that would be very helpful.

Thankyou!

Update. I installed all software on a virtual machine and everything worked as intended. The issue is likely to do with configurations/permissions on the domain based computer.

I encountered the same issue with TIA Portal V17 Update 8, where the Unified simulation would only bring up the extended download popup. After some digging, I found that this was a known issue with the V17 updates, and there’s a note about it on the download page. Installing the patch resolved the problem.

This is something to keep in mind if you rely on TIA Administrator to keep everything up to date—it may not highlight important notes that impact critical features!

Updates for STEP 7 V17, S7-PLCSIM V17 and WinCC V17 - ID: 109784441 - Industry Support Siemens

• If you upgrade the TIA Portal to V17 Update 8, you can continue to configure and load WinCC Unified PC Runtime V17 Update 7.

• If you want to simulate the project or use TIA Portal V17 Update 8 and WinCC Unified PC Runtime V17 Update 7 on the same PC, you need the patch "Patch to enable WinCC Unified PC Runtime / Simulation with TIA Portal V17 Update 8". Please contact Siemens Technical Support (Siemens Technical Support) about this.
  
  For fast processing, enter the following in the subject line of the service request:
  "Patch Unified Runtime für V17 Update 8 und WCCILScsService"
  

• This patch can also be used if a Unified Runtime cannot be started and the message "WCCILScsService - Service Failed failed w/err 0xffffffc5" is entered in the Windows Event Viewer.

I had the same problem (Extend download instead of simulation) with TiaPortal V18 Upd3 and WinCC Unified PC RT. After installing Upd3 for WinCC Unified PC RT the simulation worked without problems.