# Getting Error Code 30004 in UEFN Whenever I Try To start Launch Session Any solutions? 

**URL:** <https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, question, fortnite\
**Created:** [March 12, 2025, 8:33pm UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192 "2025-03-12T20:33:22Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![skull24](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@skull24](https://forums.unrealengine.com/u/skull24)\
**Post date:** [March 12, 2025, 8:33pm UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192/1 "2025-03-12T20:33:22Z")

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### Summary

Getting Launch Error Code 30004 every time I try to launch a session—any fix for this?

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Other

### Steps to Reproduce

Hit Launch Session and wait and an Error Code: 30004 will be produced.

### Expected Result

The Launch Session will not launch due to Error Code: 30004

### Observed Result

The Launch Session will not launch.

### Platform(s)

PC

### Upload an image

 ![Screenshot 2025-03-12 160346.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/d/a/6da569a5120b8456b99413ff0b7f5cfdce14ec21.png)  
 ![Screenshot 2025-03-12 161131.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/9/2/592d8cbe990373cd70ae04db083ec388bf566364.png)

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [March 12, 2025, 11:08pm UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192/2 "2025-03-12T23:08:43Z")

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Hi @skull24  
Fortnite is not starting under UEFN control.  
The first thing to check is UEFN and Fortnite are not corrupted.

Restart the PC, and then verify as in the link below.

[How to Verify UEFN/Fortnite](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5)

You will see many problems caused by Windows 11 Defender blocking Unreal Revision Control, and your anti-virus may have blocked parts of Fortnite.

Another post in this thread shows how to Exclude Fortnite programs from Windows Defender  
[Exclude Fortnite programs being wrongly detected virus](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/2)

The error code when google gives

> 

How to fix error code 30004/30005

1. Make sure your anti-virus or anti-malware software allows the Easy Anti-Cheat service to run.

2. Make sure the Easy Anti-Cheat service is enabled in your settings.

3. Repair the Easy Anti-Cheat software.

4. Check for game updates.

5. Check for platform updates.

6. Clear platform cache.

7. Reinstall Fortnite.

8. Power cycle your console/PC

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**Author:** ![skull24](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@skull24](https://forums.unrealengine.com/u/skull24)\
**Post date:** [March 16, 2025, 3:13am UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192/3 "2025-03-16T03:13:40Z")

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These steps [How to Verify UEFN/Fortnite](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5) and [Exclude Fortnite programs being wrongly detected virus](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/2) worked. But I have to launch the Session twice to make it work. But I just happy I got it to work, thanks.

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [March 16, 2025, 9:38am UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192/4 "2025-03-16T09:38:13Z")

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hi @skull24 ,  
Thanks for replying. That’s great to know that this procedure has worked for your, UEFN installation.

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [September 8, 2025, 8:33pm UTC](https://forums.unrealengine.com/t/getting-error-code-30004-in-uefn-whenever-i-try-to-start-launch-session-any-solutions/2387192/5 "2025-09-08T20:33:55Z")

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