https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057321#M88411 <P>Make sure&nbsp;<SPAN>LAX_VM is added to&nbsp; system variables</SPAN></P> Thu, 05 Mar 2026 16:05:34 GMT Fadel 2026-03-05T16:05:34Z https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057283#M88410 <P>Version: Windchill 13.1</P><P>&nbsp;</P><P>Use Case: installing windchill</P><P><BR /><SPAN>Description: </SPAN></P><P>I am trying to install Windchill 13.1 on Windows Server 2025 Datacenter.</P><P>But when I start "solution installer", I get the error message, that "LAX_VM is not set to Java 21 or later".</P><P>&nbsp;</P><P>Amazon corretto JDK 25 is installed.&nbsp;</P><P>&nbsp;</P><P>I found that in this forum&nbsp;<A href="https://community.ptc.com/t5/Windchill/Error-installing-Windchill/td-p/926025" target="_blank">https://community.ptc.com/t5/Windchill/Error-installing-Windchill/td-p/926025</A>, which points to this</P><P><A href="https://www.ptc.com/en/support/article/CS341598?source=search&amp;_gl=1*wu9ndk*_gcl_au*MjEzNTM5NDc2Ny4xNzcyNzAyODAx*_ga*MTY5OTM5MTYyMy4xNzcyNzAyODAw*_ga_7NMP2MSYPM*czE3NzI3MTc1MzYkbzIkZzEkdDE3NzI3MjIzODMkajYwJGwwJGgw" target="_blank">https://www.ptc.com/en/support/article/CS341598?source=search&amp;_gl=1*wu9ndk*_gcl_au*MjEzNTM5NDc2Ny4xNzcyNzAyODAx*_ga*MTY5OTM5MTYyMy4xNzcyNzAyODAw*_ga_7NMP2MSYPM*czE3NzI3MTc1MzYkbzIkZzEkdDE3NzI3MjIzODMkajYwJGwwJGgw</A></P><P>and this</P><P><A href="https://www.ptc.com/en/support/article/CS356999?source=search&amp;_gl=1*wu9ndk*_gcl_au*MjEzNTM5NDc2Ny4xNzcyNzAyODAx*_ga*MTY5OTM5MTYyMy4xNzcyNzAyODAw*_ga_7NMP2MSYPM*czE3NzI3MTc1MzYkbzIkZzEkdDE3NzI3MjIzODMkajYwJGwwJGgw" target="_blank">https://www.ptc.com/en/support/article/CS356999?source=search&amp;_gl=1*wu9ndk*_gcl_au*MjEzNTM5NDc2Ny4xNzcyNzAyODAx*_ga*MTY5OTM5MTYyMy4xNzcyNzAyODAw*_ga_7NMP2MSYPM*czE3NzI3MTc1MzYkbzIkZzEkdDE3NzI3MjIzODMkajYwJGwwJGgw</A></P><P>&nbsp;</P><P>Unfortunately, none of the solutions provided by ptc work.&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 05 Mar 2026 14:57:28 GMT https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057283#M88410 Mat 2026-03-05T14:57:28Z https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057321#M88411 <P>Make sure&nbsp;<SPAN>LAX_VM is added to&nbsp; system variables</SPAN></P> Thu, 05 Mar 2026 16:05:34 GMT https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057321#M88411 Fadel 2026-03-05T16:05:34Z https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057325#M88412 <P>The "or later" means patches within the Java version, not later Java versions.&nbsp; Please use the same Java version that Windchill 13.1 supports (21).</P> Thu, 05 Mar 2026 16:10:10 GMT https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057325#M88412 mmeadows-3 2026-03-05T16:10:10Z https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057438#M88423 <P><a href="https://www.ptcusercommunity.com/t5/user/viewprofilepage/user-id/257342">@Mat</a>&nbsp;</P><P>The issue is related to your java version. use the version mentioned in the software matrix&nbsp;<A href="https://release-advisor.ptc.com/releaseMatrix?releaseId=2272" target="_blank">https://release-advisor.ptc.com/releaseMatrix?releaseId=2272</A></P> Fri, 06 Mar 2026 07:24:25 GMT https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1057438#M88423 MTH 2026-03-06T07:24:25Z https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1058156#M88474 <P>Thanks! That did the trick.</P><P>&nbsp;</P> Wed, 11 Mar 2026 12:25:02 GMT https://www.ptcusercommunity.com/t5/Windchill/Windchill-Install-LAX-VM-is-not-set-to-Java-21-or-later/m-p/1058156#M88474 Mat 2026-03-11T12:25:02Z