Kepware

After installing Kepware Version 7.1.236  on VM Server W2025 I get this error below about UA Gateway not installedDate           Time               Level           Source                               Event11/6/2026       9:06:13.018 AM    Error           UA Gateway                           Failed to install the UA Gateway service. System requirements are not satisfied. Did I miss some pre-requisites ?Second question : once properly installed, how can we use this OPC UA Gateway?  from which tool?Best regards, 

Hi All,We are facing an issue with OPC UA communication between a Zenon OPC UA Server (Version 11) and Kepware 6.18, where Kepware is configured with the OPC UA Client Driver to communicate with the Zenon system.System Architecture:OPC UA Server: Zenon Version 11 OPC UA Client: Kepware (OPC UA Client Driver) Communication: OPC UA Kepware Device Setting: Exception-Based Subscription ModeIssue Description:When communication between the Zenon system and Kepware is interrupted, the tags in Kepware transition to an Unknown quality state, as expected.However, once communication is restored, the tags briefly transition to Good quality, but the actual tag values do not update. After a few seconds, the tag quality transitions back to Bad.It appears that the OPC UA subscription is not recovering properly after the communication is re-established.Observation:We have tested the same configuration using both communication modes in Kepware:Exception-Based Subscription Mode: Communication interruptio

Hi ,I'm using Atlascopco PF6000 controller .connected to Kepware using open protocol .Most of the parameters we are able to read and write .At the moment we are  facing issue with reading serial number of the product as  VIN or LTR_VIN . Barcode scanner is connected to  Atlascopco through USB  .we should  be able to read the serial number after the scanning in VIN or LTR VIN but we are not able to read  it .Could you please let me know the procedure?

Hi all, whats the correct procedure to update kepware server from V6.15.154.0 to V7.1.271? I’ve seen that it can be direct but also couldnt find a step by step progress. Will be great if someone have the correct steps to procedure

Dear PTC Technical Support Team,I am using PTC Kepware KEPServerEX version 6.18 and have the Advanced Tags plug-in installed.I have connected a machine through its OPC UA server and am receiving a tag with the String data type. The string contains multiple fields separated by a pipe (|) delimiter.Example input string:123|Temperature|25.6|°CThe string format is:ID|Name|Value|UnitI need to extract only the third field (25.6) and make it available as a separate tag in KEPServerEX. The source string updates continuously, so the extracted value must update automatically whenever the source tag changes.My questions are:Does KEPServerEX 6.18 support extracting a specific field from a String tag using the built-in Advanced Tags or Derived Tags functionality? If yes, please provide the exact, valid expression syntax and step-by-step configuration instructions to extract the third field between the second and third | delimiters. What should the destination tag's data type be if I need the extrac

Hello, We are using KEPServerEX 6.17.269.0 and are evaluating CA-based trust for OPC UA client application certificates.We successfully tested importing a CA certificate into Trusted Clients and connecting an OPC UA client whose certificate was signed by that CA, without individually approving the client certificate.We also found a similar discussion describing the same behavior:https://community.ptc.com/kepware-396/requirement-trust-certificate-from-few-clients-automatically-157567However, we could not find any official documentation confirming this functionality.Could someone from PTC confirm: Is CA-based trust for OPC UA client application certificates officially supported in KEPServerEX 6.17.269.0? Does trusting a CA certificate automatically establish trust for all valid client certificates issued by that CA? Is this behavior officially supported and expected to remain available in future versions? Are there any specific requirements or limitations regarding certificate chai

This is a Mess.   We have been paying for Support each year. Now today when I actually need support they say I don’t have a support contract.  I have the guy from sales showing a screen shot of the system showing my Invoice for support and paid in full.  Simply reboot the VM today and it broke the bindings. Can’t get the issue fixed due to support not willing to talk to me saying I don’t have support.   Anyone ever go through this?  How do I get this fixed.  Production is down and I can’t even get a call back from ptc. 

Hello.We are planning to trust an updated Ignition OPC-UA client certificate using the OPC UA Configuration Manager in KEPServerEX.We have put together the following procedure based on the official manual (OPC UA Configuration Manager Help v1.044), but have two questions we would like to confirm.Planned Procedure:Open the “Trusted Clients” tab and confirm that the new Ignition client certificate (Ignition OPC-UA Client) is listed. Verify that the SHA-1 Fingerprint of the listed certificate matches the updated value recorded on the Ignition side. Select the new client certificate, click “Trust”, then click “Close”. Right-click the KEPServerEX icon and select “Reinitialize”. Do not delete the old client certificate until the entire work is complete.Questions:① After clicking “Trust” on the updated certificate, is it necessary to perform a Reinitialize?The official manual shows a note at the bottom of the Trusted Clients screen stating “Server Runtime reinitialization is required to utili

Hi all,We are supporting a site where Kepware Server 6.15 (drivers V6.15.132.0, Modbus TCP) sends data to ThingWorx 10.2 over the Native Interface. We need some help with the points below.What is happening- The customer says Kepware closes by itself about every 3-4 days. Whoever sees it first opens the application again.- While it is closed, no data from any device reaches ThingWorx. Store and Forward does not help here, as it runs inside Kepware.- The longest case in the Event Log was on 10 Oct: runtime exit at 3:00:22 AM and next start at 9:04:15 AM (about 6 hours).- In the log we see 7 runtime exits. Six of them restarted within 1 to 3.5 minutes.What the Event Log shows- Each exit is preceded by "Administrator configuration session ended".- Then: "Runtime performing exit processing."- On the day of the 6-hour gap, the reopen attempt logged: "Account '<account>' does not have permission to run this application." and then "Timeout waiting for server runtime to start."- The custo

The project configuration seems really limited. Only allowing one person at a time to connect and make changes.We were hoping the API would help but it seems to require giving itself write access over and over again for every edit you make, changing the project ID and not allowing, as far as I can tell, any kind of bulk import. So if I want to manipulate 100 tags it gives itself write access 100 different times and is fairly slow.I'm not sure but it seemed like anytime the API was manipulated anything if there was another user live looking at the project they lost access.Am I missing something? Is there a way to have more than one user editing a project at a time? Is there any way to bulk import devices and channels and tags in one shot with the API?

Hi,I want to upgrade Kepware from V7.0.236.0 to V7.1.271.0.Wanted to ask is there a need to uninstall the V7.0.236.0 version or we just need to install the V7.1.271.0 through the .exe file and it will get auto upgraded?Kindly help.

I have multiple alarm tags in PLC.  I need to set an integer (long) value based on those tags such as If tag1 = true then 1000 or if tag2 = true then 1005 or if tag3 = true then 1010 I can’t seem to figure out a formula that will let me do something like that.

We are using Kepware server as OPC UA server as well as OPC UA client in two different machines. When I try to connect Server at Client, Server's certificate is automatically getting fetched in Client's 'Trusted servers' tab of OPC UA Configuration manager, which I am trusting manually. Similarly, when I again try to connect Server at Client, Client's certificate is getting fetched in Server's 'Trusted Clients' tab of OPC UA Configuration manager , which I am trusting manually. However, again when I am trying to connect still I am getting 'Client or server certificate invalid . Configure or verify the certificates' log in Server and not able to connect.  With Security policy set as NONE the communication is working, hence there is no TCP port connectivity issue, but when Security Policy: Basic256Sha256, the communication failing. I tried reissuing certificates using OPC UA Configuration manager and manually exporting and importing certificates from Server and Client but same issue is c

When accessing the server, which does not have network access, I open Kepware > Licence Utility. There, I can see my license with a Support End Date of 05/2024.I received a .lic file from our partners, which is supposed to be the renewal license, and the file is already available on the server.Back in Kepware > Licence Utility, I click Renew > Import File and select my .lic file. After confirming, however, nothing happens.Can anyone help me with this?

I created an account but it will not let me download any software

I need to purchase a Kepware Allen-Bradley ControlLogix Ethernet OPC Server license.It appears that Kepware / Velotic no longer offers an online purchasing option, and I have not been able to locate a direct phone number for sales.Does anyone have current contact information for Kepware sales or an authorized distributor who can assist with purchasing the license?

Dear All, I am trying to communicate FX5 with Kepserver, however failing to connect despite different trials. I have set PLC setting to SLMP setting with both TCP and UDP port and set it accordingly on the Kepserver. Still not able to communicate with the PLC with Tags value as BAD.I am attaching the pictures for reference also.  

Hi everyone,I am looking for some advice or assistance regarding a sudden licensing failure. We purchased a perpetual license for KEPServerEX 6.6 in 2018 through a reseller, INRAY (bundled with their FAS Server software).The system had been running smoothly without any issues until August 1, 2026, when the following error suddenly began appearing in the event log: Licensing - License for feature Siemens TCP/IP Ethernet cannot be accessed [error=-157] and must be reactivated.In the License Utility, the status for the Manufacturing Suite product is currently showing as Status - Broken: Anchor. (Note: We have not made any hardware changes, MAC address modifications, or VM migrations recently).Our reseller, INRAY, has declined to assist us because we do not have an active support contract with them. However, we are not looking for software updates or engineering support—we just need to restore a paid perpetual license that broke unexpectedly on its own.Has anyone encountered this specific

I have KepServer on PC IP 172.17.90.31 with Modbus TCP/IP Driver for Yokogawa DCS using ALE111 device with IP 172.17.90.30 communication. It seems comms is only established when Device ID in the project is <127.0.0.1>,0 and not with <172.17.90.30>,0. I understand this is due to ALE111 is Modbus Master in this case. I am facing issues where TAGs value are not accurately updating in some TAGs, but some are ok. I also have issue where the real parameter values in data type "float" always show "0" and do not update on live run. If I stop the KepServer service via Windows "runtime - End Task" and then restart KepSever project, the QC on initial handshake will display the last stopped value or stored value on the parameter TAGs, but on second update onwards, it will go back to "0" value and no update. I can successfully write to these parameter TAGs via QC and confirm the handshake with device. Can I please get support, if the Project configuration needs modification or Device pr

I’m having similar issue. I restarted the service multiple times. Each time I restart the Runtime service, the problem seems to go away but then the KEPServerEX Configuration tool stops working again. What else could be done to permanently fix the issue?

I HAD A PROBLEM WITH A VM AND I HAD TO RECOVER IT, IN THE PROCESS I LOST THE LICENSE, I HAD A PERPETUAL LICENSE BUT I NEED TO REACTIVATE AND WHEN I TRY IT  HOW TO SOLVE IT?

I configured Kepserver V7 to get data from Siemens S7-1200 using TCP/IP ethernet. I followed all the steps shown on this guide. https://support.ptc.com/help/kepware/drivers/en/#page/kepware/drivers/SIEMENSTCPIPETHERNET/HelpContents.html#However, I kept having error saying “Data block - ‘DB131’, block start = 0, block size =32, Reason = ‘Device returned protocol error’. Error class = 0x81, Error Code = 0x4.” I researched this error and I learned I needed to install TIA Portal Exporter installed to change .ap file to .tpe file. Then import the .tpe file to kepserver device. This resulted error saying “Error initializing the Openness API. Please verify all necessary components are installed”. I reinstalled TIA portal to verify openness is installed and it was installed. Please advise how I can resolve these issues.

I am trying to connect to KEPServerEX 6 from an EWON device.  I set up the security and got he message on the KEPServer log that the EWON was now trusted and could open a connection.When I tried to connect to browse for tags in the KEPServer, I received the error opcuaiosrv-Connect fail (BadCertificateHostNameInvalid)on the client side.After working on this for awhile, I noticed that the KEPServer certificate in the EWON repository was listed as being from the verbose computer name endpoint and I was trying to attach from the IP endpoint.Would this make a difference and if so, how do I generate a KEPServer certificate for the IP endpoint?  I don’t seem to be able to attach to the computer name endpoint with the EWON device.Or does this message mean something else?  The computer times are within a minute and security levels match.  The EWON doesn’t seem to allow no security connections, so I have no luck turning security off.

PLC type: Mitsubishi Fx5UEthernet Module: USR W630 (Wi-Fi to serial)The proposal PLC connects directly to Kepware through the Ethernet port and is working fine, and I want to try to connect through the Wi-Fi.My diagram is PLC - ethernet → USR W630 ))) Wi-Fi → Kepware.The purpose of the Ethernet module is to work like an Ethernet bridge. I follow this link to set up the PLC: https://industrialmonitordirect.com/blogs/knowledgebase/mitsubishi-fx5u-kepware-slmp-connection-configuration?srsltid=AfmBOop2S78y27FdOU68Ot9BDMhwFP3ieD8WG3x2a4zojZ9K_RskSMqR.In Kepware, I tried using the Mitsubishi Ethernet method to set up it, but it always shows that the reading is failing. I tried with this tutor. The problem is when I tried through Modbus TCP/IP to reading the PLC values. It looks like no problem, and I got the value of the PLC address. Does everyone have these problems, or any suggestions for my situation? Thank you first.

Hi,I have a question regarding ServerTimestamp and SourceTimestamp  from this post. Based on the OPC UA specification, if the device/PLC doesn't support hardware timestamping, shouldn't SourceTimestamp be null? However, on the client side, I noticed that SourceTimestamp is always equal to ServerTimestamp. Is there any documentation explaining why this happens? Furthermore, when I issue a Read request for a tag whose value hasn't changed, SourceTimestamp is still constantly updated and identical to ServerTimestamp. Any insights or references would be greatly appreciated!