Solidworks Could Not Obtain A License Server Node Is Down
Coleman John
A SOLIDWORKS Network License requires a network connection between the server and client machines. The server runs the SolidNetWork License Manager service and client machines must verify a connection and available licenses from the server before SOLIDWORKS will open. Communication errors are commonly found on first setting up a network license or if there are changes to the network.
The SolidNetWork License Manager needs to be installed, activated and started on the server. The major version needs to be the same or newer than SOLIDWORKS running on the client machines. It is backwards compatible so you should always upgrade the License Manager before SOLIDWORKS. For example you can use a 2019 License Manager while running SOLIDWORKS 2018.
solidworks could not obtain a license server node is down
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This switches the License Manager to use a static vendor daemon port in order to specify the specific port in the firewall. By default the License Manager uses TCP ports 25734 and 25735. These can be changed if required.
Though not typically required with the default Windows Firewall, you may need to apply a rule to allow connection for programs lmgrd.exe and sw_d.exe. By default these programs are located under C:\Program Files (x86)\SolidWorks SolidNetWork License Manager.
With the default Windows firewall settings the client machine should be able to accept connectivity through both ports 25734 and 25735, as it is seen as a response to outbound communication from the server.
NOTE: If communication is still failing through these ports (see Telnet Test below), contact your IT department as changes may have been introduced to the firewall settings preventing inbound/outbound communication on the client.
Verify the SolidNetWork License Manager Client application is pointing to the correct server. This application is found under Start > SOLIDWORKS Tools > SolidNetWork License Manager Client. On the Server List tab, add the appropriate port and server name. Ensure only one server is listed unless you have multiple servers hosting separate licenses.
The Ping test verifies that you have access to the server over the network. This will also give you an indication of the speed of connection from the response time (latency). If the test fails, you will need to check your network connection on both machines.
The speed in milliseconds will be given to determine the latency. This should be a low as possible. If it shows more than 100ms, this indicates a very slow connection and may fail to obtain a license due to a default timeout. Have your IT troubleshoot the slow performance of the network.
Although typically used to troubleshoot SOLIDWORKS PDM connections, the Connectivity Test Tool can be used to test for the SNL Server connection only. To find out where the tool can be downloaded, read our blog article SOLIDWORKS PDM Connectivity Test Tool
There could be multiple reasons why the server name is not getting recognized so here are a few points which can be taken care of if the error "License server machine is down or not responding. (-96,7:11001 "WinSock: Host not found (HOST_NOT_FOUND)")" is encountered.
Here is the problem, the server is running slower and slower gradually until I reboot it. But after reboot it, it goes back to normal and working fine for next few days. Then the slowness issue comes back again after few days later.
The above 3 are major software on this server. And curtain e-locker is the security software which is handling restrictions of files and folders access to the users. The backup is running hourly for incremental backup.
So far all hourly backup has been successfully completed without any issues. As you mentioned, I just noticed that some user have never log off/shut down their PC at the end of the day and they might have left opened some programs (excel, word, etc) behind.
At last, I found the culprit that slowing down my server. It was a (Curtain e-locker) third-party network driver that causing the memory leak. So I asked their support team to provide the solution after I found out the issue using Process Explorer, Poolmon and Latency Monitor.
I would say that this is a quite good software when it comes to handling files, folders & applications that you want to protect. But my current employer is really pleased with this software because they can control almost everything on client PCs. FYI, after I have sorted it out above issues, most of the problems seem to be fine until now. But bear in mind that this software can only help you restrict your data to limited scale and you always have to keep in touch with their developer team to sort out all the loop holes you could find. I hope it is good enough for you.
Or at least this should be the first thing that Jim Heppelmann tells us in his Liveworx 2021 presentation ("Digital Pyshical transformation... And by the way, we are canceling support for USB dongles").
I also work in a larger company where concurrent licenses are used and so this is not a big issue for me.
Nevertheless, I know a few independent one-man businesses where USB dongles are used.
These people usually work in their office on a high-performance workstation, but also have a less powerful notebook because they occasionally need to work on the road and visit their customers.
Due to the size of these small companies, they do not have the server infrastructure to run a license server, or sometimes the know-how to set one up.
For them, the removal of USB dongle support will be a bit of a pain.
The price of a floating license vs floating is nearly 3 times!!! For this case in particular how small companies will work? Take the workstation and go to costumers with all hardware? Just work with laptops. Simply impressive!!!! I really deslike this option from PTC
CAD market is crowded, differences between software are small. We have to fight for every customer and PTC is not helping at all. Little things like this one can make them switch. For small companies, is it not a big deal to ditch Creo for Solidworks or Inventor. It is happening all the time.
In all fairness, 'node-locked licenses' are supposed to be just that, 'node-locked'. They are intended for use on a single computer. If would seem that by using a removable network adapter (usb based or otherwise) people have been able to get around this limitation and effectively 'float' these node-locked licenses to other computers. Obviously this is contrary to the intent of the node-locked license, so it seems perfectly reasonable that PTC would want to crack down on this license misuse going forward.
Sorry TomU, but I don't agree. You are technically correct, but in reality this is just not feasible. Maybe, it would work for two motivated users, but it will soon be a nightmare for three or more. The majority of USB adapters users are one man band or maybe two, who switch license between workstation and laptop.
It is the abuse of the 'node-locked' license that has led PTC to stop support for the USB dongle as the license file repository. If you have a new bundle, they come with a home-use license that can be installed on your laptop while leaving the main license on your workstation. I realize that this is only with a subscription, so you may need to upgrade your licenses.
Imagine being (one man band) freelancer having your own workstation, laptop and also having Computer provided by large company that you are working for. Agreement with company is to bring your own CAD software. Computer is provided for security reason as they want to keep only copy of work. With that computer security is set in a way that i can not see my home or my office network only company's network so I don't see how I can have license on a server. Sometimes switching between computers needs to happen several times per day as you do not work only on one project or another client call you for quick modification or so. This ability to have USB license dongle is very critical for me !Home license is not an option as offers only basic functionality, I need my full license all the time!
No, that is not correct. Function of 'node-locked' license is to only allow use on one single computer (ever). Function of 'floating' license is to allow use any any computer, but only one at a time. Neither license will allow simultaneous use on more than one machine.
DraftSight is a feature-rich 2D and 3D CAD solution for architects, engineers and construction service providers, as well as professional CAD users, designers, educators and hobbyists. There are various levels of DraftSight licenses available. For companies with multiple users, DraftSight Enterprise provides network-based licensing for shared use. The following post provides you with a DraftSight Enterprise Installation Guide.
There are two methods to host the DraftSight network licenses on a server: SolidNetWork License Manager (SNL) or Dassault Systmes License Server (DSLS). SOLIDWORKS network licensing makes use of the SolidNetWork License Manager to host licenses on a server. This can be combined with DraftSight Enterprise licenses. In general SNL is easier to install and maintain vs the DSLS method.
If the SolidNetWork License Manager is not currently used for SOLIDWORKS licenses, the License Manager will need to be installed on a server. To download the installation files, first create and register a SOLIDWORKS Customer Portal account with your DraftSight Enterprise serial number.
From the Downloads and Updates section, choose the latest version available. The License Manager is backwards compatible so clients using a previous version can still obtain licenses.
Follow the prompts to add your 24-digit Draftsight Enterprise serial number (beginning with 0010 or 9010). The next window provides information about the server. By default communication is through TCP port 25734 though this can be changed if needed. If firewalls are present, enable the checkbox and this will also use TCP port 25735 for communication. Ensure all firewalls allow inbound and outbound traffic through TCP ports 25734 and 25735 on both the client and server machines.
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