SELicensedAt – Possibly a log field from FlexNet licensing logs (e.g., SELicensedAt=2026-04-21 14:32:10) indicating when a Solid Edge license was checked out.
Self-licensed seat – “selicensedat” might be a misspelling of “self-licensed seat” or “SE licensed at [datetime].”
Siemens PLM Software has moved away from the selicense.dat file format in modern versions of Solid Edge (V219 and later), transitioning to the Solid Edge Licensing Wizard and a different backend architecture.
SELicense.dat file is the critical license configuration file for Solid Edge V20
(and later versions), used to authorize the software on individual machines or across a network. www.engineering.it Core Function & Utility The utility of SELicense.dat depends on your specific license type: Node-locked (Standalone):
This file is unique to a specific computer's Composite ID (SE_CID). It must be placed in the ~\Solid Edge\Program directory to activate the software on that single machine. Floating (Network):
In a network environment, this file contains information for the FlexLM license server. It is copied from the server to each client machine and placed in the same
directory to allow the client to "check out" a license from the server. www.engineering.it Helpful "Review" & Best Practices
While not a "product" in the traditional sense, managing this file correctly is essential for maintaining a stable CAD environment: Stability:
Ensuring the file is correctly mapped prevents "License not found" errors during startup. Accessibility: For floating licenses, you must keep the LocalLicenseServer
running in the background. If the server is closed, the software may automatically shut down after a 3-minute warning period. Version Management:
Solid Edge V20 is a legacy version. Newer versions (like Solid Edge 2020+) have transitioned to more unified licensing schemes to align with other Siemens programs like NX, though they often still use file structures for certain configurations. Firewall Tips:
If you encounter issues with a network license, it is often due to the Windows Firewall blocking the sedemon.exe processes on the server. SIEMENS Community Common Setup Steps Placement: Always place the SELicense.dat file in the C:\Program Files\Solid Edge V20\Program Activation: License Wizard solid edge v20 selicensedat
(included in the Solid Edge program group) to point the software toward the file if it doesn't detect it automatically. Network Config: For floating setups, ensure the server name inside the file matches your actual license server's hostname. troubleshooting steps for a specific license error you're seeing? Solid Edge Floating Licence set-up
In Solid Edge V20, the SELicense.dat file is the critical component for managing your software license. This file contains the encoded data that authorizes your specific version of Solid Edge to run on your machine or server. Understanding SELicense.dat
File Purpose: It validates your software "seats" and features. For V20 (released around 2007), licenses were typically tied to a specific hardware identifier like a MAC address or a physical dongle.
Default Location: The file is usually stored in the \Program folder within your Solid Edge installation directory (e.g., C:\Program Files\Solid Edge V20\Program). Later versions moved this to a Preferences folder.
File Content: It is a plain text file that can be opened with Notepad to verify its contents. A valid file will contain multiple lines of code starting with keywords like SERVER, DAEMON, or FEATURE. Configuration & Troubleshooting
If you are setting up or fixing a V20 license, follow these key steps:
Environment Variables: Ensure the system variable SE_LICENSE_SERVER is correctly set to point to your license file or server.
Permissions: Verify that you have write access to the folder containing SELicense.dat. If the file doesn't update when you enter license information, Windows permissions might be blocking it.
License Utility: Use the License Utility application (found in the Windows Start menu under the Solid Edge folder) to point the software to your specific .dat file.
Hardware Check: Since V20 is a legacy version, ensure your hardware still matches the "Host ID" listed in the file. If you have changed computers, the old license file will not work without being re-hosted by Siemens Support. Legacy Support Note
Solid Edge V20 is a legacy release from 2007. While still functional for many, Siemens now offers a Free Student Edition and a Community Edition for hobbyists that use more modern licensing methods (like cloud-enabled licenses) and are compatible with current versions of Windows. i need solid edge v20 because of teaching to my students
Let me break down what you might be referring to, and then I’ll provide a structured report based on likely interpretations. SELicensedAt – Possibly a log field from FlexNet
Solid Edge V20 introduced a refined "License Borrowing" feature for floating licenses, allowing a user to take a license offline for a set period. If the borrowing mechanism failed (e.g., corrupt trusted storage), the selicensedat command would attempt to reset or validate the borrowing status by re-reading the source file.
Some old Solid Edge v20 academic or evaluation versions used a self-licensing mechanism where a license.dat was generated locally without a server. This is rare for commercial v20.
The selicensedat flag is primarily a diagnostic tool used by System Administrators and CAD Managers. It was critical in V20 because this version marked a transition period where Siemens was moving users toward newer licensing models, causing conflicts for legacy users.
| Field | Meaning |
|---------------|-------------------------------------------------------------------------|
| SE | Solid Edge |
| LicensedAt | Timestamp when the license token was granted to the client (ISO format) |
This field is not user-configurable; it is written by the license daemon (lmgrd + UGL) at checkout time. Useful for:
If "selicensedat" refers to something else — e.g., a typo for "self licensed seat" (local node-locked license) — please clarify. Otherwise, the above report covers the most plausible technical scenario for Solid Edge V20 and SELicensedAt as a licensing log attribute.
The file selicense.dat is the critical license file for Solid Edge V20 that contains your activation details, including license type, expiration date, and host ID. Key Functions of selicense.dat
Activation: It is a plain text file required to activate various license types, including "Home Use" and academic licenses.
Storage Location: In older versions like V20, it is typically located in the Program folder of your Solid Edge installation directory. In slightly newer versions (like ST series), it moved to the Preferences folder.
Content: You can open this file with a text editor like Notepad to verify your license info; a valid file should contain multiple lines of data, not just one. How to Manage Your License
Download: Log in to the Siemens Support Center with your WebKey. Under License Management, choose Passwords and License Files to download your specific file.
Activation Utility: To apply the license, use the License Utility (found via Start > All Programs > Solid Edge > Licensing). This tool helps you point the software to your .dat file or your license server. Siemens PLM Software has moved away from the selicense
Floating Licenses: For network setups, you may need to edit the file to include your server's name and ensure ports (like 27999) are open through your firewall.
Important Compatibility Note: Solid Edge V20 is an older version (released around 2007) and may face stability issues on modern operating systems like Windows 10 or 11.
The selicensedat command in Solid Edge V20 is a diagnostic executable switch that forces the software to validate the selicense.dat file immediately upon launch. It is used to debug hardware ID mismatches (MAC addresses), resolve pathing errors in the Windows Registry, and verify FLEXnet server connectivity without loading the heavy CAD graphical interface. It represents the "debug mode" of the legacy Siemens licensing architecture.
SELicense.dat is the license configuration file used by Solid Edge V20
to manage software authorization and user access. It acts as the "key" that tells the software which features are active and whether you are using a standalone (node-locked) or networked (floating) license. Key Functions of SELicense.dat Authorization
: It contains encrypted strings (license keys) that validate your legal right to use the software. Feature Management
: It defines which specific modules are available, such as Part Modeling, Assembly, or Drafting. Server Routing
: For floating licenses, this file points the client computer to the
license server by specifying the server's hostname and port number. Common Locations
In a standard installation of Solid Edge V20, you can typically find or place this file in the following directory: C:\Program Files\Solid Edge V20\Program\ Troubleshooting Common Issues "Cannot find license file" : This usually means the file is missing from the folder or the SELMD_LICENSE_FILE environment variable is pointing to the wrong path. Editing the File : While you can open
files with Notepad to check the server name or your CID (Composite ID),
edit the encrypted hex codes. Doing so will corrupt the license and prevent the software from launching. Updating Licenses
: If you upgrade your hardware or renew your subscription, you must replace the old SELicense.dat
with the new version provided by Siemens (or your reseller).