Error Messages

Failed to connect to Apache Solr

Solution Number: 1297 Applies to: COMSOL Model Manager Versions: All versions

When trying to connect to my local Model Manager I receive an error message that says Failed to connect to Apache Solr The most likely cause for this error message is that the index used by the Model Manager search ...


How can I check if I can connect to the license server

Solution Number: 1288 Versions: All versions

When trying to launch COMSOL Multiphysics, I get an error message that indicates that I am not able to connect to the license manager. How can I check that? There are several ways of testing if you can connect to a ...


Network connect to THIS_HOST failed.

Solution Number: 1289 Versions: All versions

When launching COMSOL Multiphysics on Linux, i receive an error message that says: Network connect to THIS_HOST failed. The license file indicates THIS_HOST, and the server is not running on this host. If it's ...


My compiled app fails to run on macOS 11

Solution Number: 1283 Versions: 5.5

After upgrading to macOS 11, I receive an error when trying to launch a compiled application. Note: please follow the instructions below exactly. Do not attempt to copy the folders in the ZIP archive to the ...


Error: Please close the COMSOL window in SOLIDWORKS before synchronizing the geometry

Solution Number: 1279 Applies to: LiveLink for SOLIDWORKS Versions: 5.5

When I try to synchronize the geometry between COMSOL and SOLIDWORKS, the error message Please close the COMSOL window in SOLIDWORKS before synchronizing the geometry. is displayed. This error may occur sometimes ...


McAfee antivirus removes file from COMSOL installation

Solution Number: 1278 Versions: 5.5, 5.4, 5.3a, 5.3, 5.2a, 5.2

After a recent update of the McAfee antivirus software, it flags a COMSOL file as a dangerous file and removes it, leaving COMSOL in a broken state. When trying to launch COMSOL, I get an error saying: Could not find ...


Unexpected error on startup of COMSOL pointing to "Could not load file or assembly 'cstextrenderer_wpf"

Solution Number: 1274 Applies to: COMSOL Multiphysics Versions: 5.6, 5.5

After installing COMSOL Multiphysics, I receive an unexpected error when launching it. Looking in the log file, it points to an issue with cstextrenderer_wpf as per below 2020-01-08T13:52:42.170+01:00 Could not load ...


"Data access entity removed" occurs in my application

Solution Number: 1247 Versions: All versions

When running my application, I get the error "Data access entity removed". If a node is removed, Data Access to the node becomes invalidated. In general this error occurs if nodes used in Data Access are explicitly ...


Out of Memory

Solution Number: 1243 Versions: All versions

The error "Out of Memory" occurs. Of the available memory (RAM and virtual memory), one section, the Java heap, is reserved for Java. The rest of the memory will be available for meshing and solving. If you receive the ...


Unexpected error thrown by the Method Editor

Solution Number: 1242 Applies to: COMSOL Multiphysics, COMSOL Server Versions: All versions

I run COMSOL Multiphysics on Windows 7. When trying to access the Method Editor in the Application Builder, I get an unexpected error. When opening the log file, the top of the stack trace looks like this: 2018-01 ...


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Learning Center Resources

Learn how to use the COMSOL Multiphysics® software for modeling devices, designs, and processes. Access the Learning Center courses and articles below for modeling guidelines, step-by-step demonstrations, and exercise files.

Articles