All Solutions

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 ...


Graphical Glitches in the User Interface on Gaming Computers

Solution Number: 1290 Versions: 5.6

Some users running COMSOL Multiphysics on gaming computers have started experiencing graphical glitches in the user interface. It looks like rows are replaced by magnified parts of themselves. The glitches may also ...


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 ...


The log window in COMSOL Multiphysics is unreadable on my Linux computer

Solution Number: 1287 Versions: All versions

The Log window in my COMSOL Multiphysics sessions looks like this: This issue is most commonly observed on Ubuntu 20.04 LTS (Focal Fossa) when the package texlive-fonts-recommended is present. But it has been ...


Which Linux Operating Systems does COMSOL Support?

Solution Number: 1286 Versions: All versions

Which Linux Operating Systems are supported by COMSOL? COMSOL strives to support maintained Long-Term Support (LTS) versions of the most popular Linux distributions used in enterprises. This includes CentOS 7 (until ...


Graphics Window not responding on computer with Intel Iris Xe graphics chip

Solution Number: 1285 Versions: All versions

I recently bought a laptop with the new Intel Iris Xe graphics chip. When I run COMSOL Multiphysics on it the Graphics window does not appear to respond to mouse movements. There are three suggested workarounds for ...


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 ...


COMSOL Multiphysics 5.5 fails to start on macOS 11

Solution Number: 1282 Versions: 5.5

After upgrading to macOS 11, COMSOL Multiphysics 5.5 fails to launch. # Make sure you are running COMSOL Multiphysics 5.5 Update 3. From the COMSOL Multiphysics installation directory, go to the directory called ...


How to debug an External Material

Solution Number: 1281 Applies to: COMSOL Multiphysics, Structural Mechanics Module Versions: All versions

I have a implemented an external material for use with Structural Mechanics, but my model is not solving. External materials are coded in C, and then compiled into a shared library that COMSOL Multiphysics uses at ...


Design Module license checked out directly when starting 2D drawings

Solution Number: 1280 Applies to: COMSOL Multiphysics, Design Module Versions: 5.5

For users of a floating-network license for COMSOL Multiphysics that includes the Design Module, a license key for the Design Module is checked out as soon as you draw something in a 2D geometry. This is the case even ...


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