: If you recently installed or updated Java or Surpac, try reverting to a previous state or updating to the latest version if you're not on it.
Several Windows 10 and 11 updates released in late 2022 and throughout 2023 introduced stricter DLL loading security (e.g., changes to LoadLibrary behavior). These updates have been known to break legacy DLL loading routines in older Surpac 2021 Top builds.
– Delete orphaned Java version keys under HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft . Reinstall Surpac’s Java bridge using the “Repair” option from the installer. surpac error loading jvmdll 2021 top
Under System Variables , look for JAVA_HOME . Ensure it points to the 64-bit Java folder utilized by your engineering software (e.g., C:\Program Files\Java\jre1.8.x ).
Check that the Java "bitness" matches your Surpac version. Most modern Surpac versions (like 2021/2022) are and require a 64-bit Microprocessor and 64-bit software environment. Update Environment Variables Open System Properties > Environment Variables . Under System Variables , find Path and click Edit . : If you recently installed or updated Java
If it exists, click and verify it points to your current Java installation folder (e.g., C:\Program Files\Java\jre1.8.0_xxx ).
Your exact (e.g., 2021 refreshed variants). Ensure it points to the 64-bit Java folder
By following these steps, you should be able to resolve the "Error loading JVMDLL" issue and get back to using Surpac for your geology and mining projects.
This is the . Surpac 2021 Top is a 64-bit application . However, the installer often searches for a Java version. If you have a 32-bit version of Java installed (or even a 32-bit JRE), Surpac will look for jvm.dll in the wrong directory (e.g., C:\Program Files (x86)\Java\ ) and fail. It needs the 64-bit DLL located in C:\Program Files\Java\ .