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ingemilo's avatar
ingemilo
Icon for New Contributor rankNew Contributor
1 month ago

Quartus Prime Pro 25.1 Crashes Randomly

I’ve been having trouble compiling projects with Quartus Prime Pro version 25.1 for several days. In an unpredictable manner, Quartus stops the compilation or freezes at a certain point—it can happen...
Compilation
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KennyT_altera's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
1 month ago

Thanks for the update and the detailed troubleshooting steps you’ve shared. It’s good to hear that reinstalling Quartus and reformatting your system seem to have resolved the issue for now.

Regarding your question about why a similar problem affected both newer and older versions (like Quartus 13.1): Sometimes, underlying system changes (such as Windows updates, driver changes, or even new security software) can introduce instability in legacy applications, especially ones that haven’t been updated in years. Since Cyclone III devices are only supported by older Quartus versions, you may encounter increasing compatibility issues with newer operating systems.

If the problem returns, you might try:

  • Running Quartus 13.1 in compatibility mode for an older version of Windows.
  • Disabling any unnecessary background software or antivirus that could interfere with Quartus.