When Error #120 appears, it usually means the software attempted to read a license identifier—perhaps inside a .sty file or a header—and found the syntax unreadable or the text missing. The machine is effectively saying, "I see this code exists, but I cannot verify the legal contract that allows me to touch it."
DataRecover Pro 2024 Error: After a Windows update, the software shows “License not recognized error #120.” license not recognized error #120
The local license file ( lservrc ) contains incomplete strings or missing cipher blocks required by the software's verification engine. When Error #120 appears, it usually means the
Step 1: Disconnect your workstation from the Internet entirely. Step 2: Disable your system's active Antivirus shield and Windows Firewall temporarily. Step 3: Navigate to: C:\Program Files\Computers and Structures\[ETABS/SAP2000/SAFE]\CSiLicensing\ Step 4: Right-click "LicenseRequest.exe" and select "Run as administrator". Step 5: When prompted, verify the "Machine Locking Code (310)" is selected, then hit OK. Step 6: Refresh your local authentication file and restart your computer. Use code with caution. 3. Audit System Date and Clock Consistency Step 2: Disable your system's active Antivirus shield
Aggressive firewalls or third-party antivirus suites blocking the native LicenseRequest.exe engine from building or reading local system variables.
To help pinpoint the issue, could you let me know you are running and whether you are using a standalone or network-based deployment?