# An attached play session will always force Windowed mode on

**URL:** <https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, Status-NeedsTriage, fortnite\
**Created:** [November 10, 2026, 7:27am UTC](https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200 "2026-11-10T07:27:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mikufromgatlin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mikufromgatlin/32/1061332_2.png) [@mikufromgatlin](https://forums.unrealengine.com/u/mikufromgatlin)\
**Post date:** [November 10, 2026, 7:27am UTC](https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200/1 "2026-11-10T07:27:54Z")

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### Summary

An attached play session will always force Windowed mode on

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

UI/Tools

### Steps to Reproduce

1. Launch an island in UEFN
2. Launch a play session
3. Observe the play session is set to use “Windowed” Window Mode under Settings \> Video \> Display
4. Set it to “Fullscreen Windowed”
5. Observe it defaults back to “Windowed”

### Expected Result

Setting it to something persists.

### Observed Result

It keeps resetting back to “Windowed”.

### Platform(s)

Windows 10 PC

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<div class="post-metadata">

**Author:** ![mikufromgatlin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mikufromgatlin/32/1061332_2.png) [@mikufromgatlin](https://forums.unrealengine.com/u/mikufromgatlin)\
**Post date:** [November 10, 2026, 7:29am UTC](https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200/2 "2026-11-10T07:29:10Z")

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Noting - this makes it impossible to reasonably use the Game Performance tool, as my computer does not play nice with Windowed Mode and Fortnite. FPS drops galore.

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<div class="post-metadata">

**Author:** ![mikufromgatlin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mikufromgatlin/32/1061332_2.png) [@mikufromgatlin](https://forums.unrealengine.com/u/mikufromgatlin)\
**Post date:** [November 10, 2026, 9:14am UTC](https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200/3 "2026-11-10T09:14:09Z")

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Launching Fortnite directly (before UEFN) results in this issue not occurring. I can later connect it to UEFN and the issue still does not occur.

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**Author:** ![Bug-Reporter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bug-reporter/32/997076_2.png) [@Bug-Reporter](https://forums.unrealengine.com/u/Bug-Reporter)\
**Post date:** [November 10, 2026, 2:01pm UTC](https://forums.unrealengine.com/t/an-attached-play-session-will-always-force-windowed-mode-on/2853200/5 "2026-11-10T14:01:00Z")

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The status of FORT-1191878 changed to ‘Needs Triage’. We are routing this to the appropriate team for investigation.