# Epic Games Launcher version 19.0.0 does not start on Core 2 Duo CPUs due to lack of SSE4.2 support.

**URL:** <https://forums.unrealengine.com/t/epic-games-launcher-version-19-0-0-does-not-start-on-core-2-duo-cpus-due-to-lack-of-sse4-2-support/2672526>\
**Category:** Feedback & Requests\
**Tags:** launcher-not-startin, launcher-issue, launcher-crash, epic-games-launcher, epic-games-store, bug-report, question\
**Created:** [November 7, 2025, 3:04am UTC](https://forums.unrealengine.com/t/epic-games-launcher-version-19-0-0-does-not-start-on-core-2-duo-cpus-due-to-lack-of-sse4-2-support/2672526 "2025-11-07T03:04:42Z")\
**Posts on this page:** 1\
**Showing post:** 25

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**Author:** ![Death2Order](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Death2Order](https://forums.unrealengine.com/u/Death2Order)\
**Post date:** [November 18, 2025, 1:25am UTC](https://forums.unrealengine.com/t/epic-games-launcher-version-19-0-0-does-not-start-on-core-2-duo-cpus-due-to-lack-of-sse4-2-support/2672526/25 "2025-11-18T01:25:57Z")

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hello all

same problem here, with launcher 19.0 i cant do nothing for 14 Days.

i have AMD Phenom II X6 1100T and i have only SSE4A and not SSE4.2

I install after many problems launcher 18.8.1 and all is good in moment.

i lost any installed games, but ok now is this so

Hope we becom quickly an better update from support.

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