Installation & Licensing Center
INFO - Understanding Ansys Diagnostic Logs
Authored by Steve Barnett
January 12th, 2023
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KB1291007
Description
Ansys diagnostic logs contain tons of helpful information that can be used to troubleshoot license or software errors. There are two different sets of logs that can be generated - both are helpful. This article will highlight the most useful information contained within each:
- License Server Logs
- Client Logs
See HOW TO - Gather Ansys Diagnostic Logs for more info.
Solution
INFO
Except for the .NFO file, all diagnostic logs should be opened with your favorite text editor (Windows Notepad, or our favorite, Notepad++).
Client Logs

Name & Contents | Filename | Example |
Client Specified License Servers File
|
ansyslmd.ini | ![]() |
System Diagnostic Info File
|
diagnosticInfoScreenOutput.txt |
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Application License Logs
|
\licdebug_files\licdebug.(product).(version).out
(One log per product. Only included if the product has been opened) |
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Installation Log
|
install.log | ![]() |
Installation Errors Log
|
install.err | ![]() |
License Client Error Log
|
install_licconfig.err | ![]() |
Install License Config Log
|
install_licconfig.log | ![]() |
Windows System Info File
|
ansyssys.nfo |
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License Server Logs

Name & Contents | Filename | Example |
License Server(s) Specified
|
ansyslmd.ini | ![]() |
Installed License File(s)
|
license_files\ansyslmd.lic
(if multiple license files (.lic) are installed, they will be named different. Multiple files can only be installed manually) |
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FlexNet Debug Log
|
license.log | ![]() |
Licensing Interconnect Log
|
ansysli_server.log | ![]() |
License Manger Center Log
|
ansyslmcenter.log | ![]() |
Installation Error Log
|
install.err | ![]() |
Installation Log
|
install.log | ![]() |
License Manager Installation Config Error Log
|
install_licconfig.err | ![]() |
License Manager Installation Config Log
|
install_licconfig.log | ![]() |
Options File
|
ansyslmd.opt | ![]() |
Local Host File
|
hosts | ![]() |
Backup of old .INI and .LIC Files
|
license_files\backup\* folder | ![]() |
Previous Server .LOG
|
logs_backup\*.log | ![]() |
Product Compatibility List
|
prodord\ansysli.prodord.xml | ![]() |
List of Included Diagnostic Files
|
LMCENTER_DIAGNOSTICS_FILELIST.TXT | ![]() |
Web Server Log (Not Useful)
|
tomcat\log\* folder and tomcat\conf\* folder |
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