Please check the 32 or 64 bits of JRE The 32 or 64 bits of JRE need to match 32 or 64 bits of exe file, at the last step of Jar2Exe, https://www.jar2exe.com/usage/wizard/stepoutput, there is an option "Create 64 bits" reply
The 32 or 64 bits of JRE need to match 32 or 64 bits of exe file, at the last step of Jar2Exe, https://www.jar2exe.com/usage/wizard/stepoutput, there is an option "Create 64 bits"