However, many players said that they encountered the problem of Homeworld 3 not launching.
Are you one of them?
If so, check out the methods below.

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Method 2.
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Run Homeworld 3 as an Administrator
Running the game as an administrator usually works for many game launch issues.
On your Steam client, find and right-click Homeworld 3 and chooseManage>Browse local files.
Once the game installation folder is opened, find and right-nudge the Homeworld 3 executable file and chooseProperties.

In the new window, go to theCompatibilitytab, then tick the option ofRun this program as an administrator.
Then it’s possible for you to relaunch Homeworld 3 and look to see if it runs properly.
Method 3.
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Update the Graphics Card Driver
Graphics card drivers also have a certain impact on game operation and performance.
If Homeworld 3 isnt running properly, it’s possible for you to try updating your graphics card driver.
On the taskbar, right-click theWindows logobutton and chooseDevice Manager.

Double-click onDisplay adaptersto expand it, then right-tap on your graphics card and chooseUpdate driver.
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Method 4.
Open Steam Library, right-click Homeworld 3 and chooseProperties.
Navigate to theInstalled Filestab, and then click theVerify integrity of game filesbutton.
Wait patiently until the verification process is completed.
Method 5.
Press theWindows + IKey combination to open parameters.
Go toUpdate & Security>Windows Security>Firewall & web link protection>Allow an app through firewall.
Next, hitChange parameters>Allow another app.
Browse your files and choose the Homeworld 3 executable file, then clickAdd.
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Bottom Line
Wondering what should you do while encountering the problem of Homeworld 3 not launching?
Just try the approaches listed above one by one until the issue is fixed.