# 31.20 \[Solved\] UEFN Fix Validation Error pop up wont "Run"

**URL:** <https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\
**Created:** [September 17, 2024, 11:48am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338 "2024-09-17T11:48:36Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**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:** [September 17, 2024, 11:48am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/1 "2024-09-17T11:48:36Z")

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### Summary

When you get a validation error from the new validation checks  
the popup Fix Validation errors does not do anything when you click “Run”

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Assets

### Steps to Reproduce

1. Open your UEFN project from 31.00 in 31.20
2. Try and Launch your project. Validation error occurs
3. The pop-up “Fix Validation errors” does not do anything when you click “Run”

### Expected Result

The pop-up “Fix Validation errors” does “Run” when clicked

### Observed Result

The popup “Fix Validation errors” does not do anything when you click “Run”

### Platform(s)

Windows 11 23H2

### Additional Notes

This seems to have occurred in an earlier version but now validation is more strict Errors not Warnings this function will be used more

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<div class="post-metadata">

**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:** [September 17, 2024, 11:51am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/2 "2024-09-17T11:51:58Z")

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31.20 [Solved] UEFN Fix Validation Error pop up wont “Run”

**Dont use this unless the output log has been checked for “Conform Texture” errors in the Output log first**

see [fix conforming](https://forums.unrealengine.com/t/power-of-2-does-not-work/2024339/4)

Legal obligation  
Neither EPic or its agents are responsible for this procedure  
**This is NOT endorsed by Epic and there is NO WARRANTY.**  
**This problem lies in YOUR PC in YOUR files and you are responsible for using this procedure.**

The problem reported above can be fixed by clearing YOUR local temp file  
which contains files going back to 29.60  
Make sure you have restarted your PC

Update REMOVED DUE TO PEOPLE SAYING THIS IS CAUSING THEM PROBLEMS  
[fix conforming](https://forums.unrealengine.com/t/power-of-2-does-not-work/2024339/4)

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<div class="post-metadata">

**Author:** ![Dearies](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dearies](https://forums.unrealengine.com/u/Dearies)\
**Post date:** [October 15, 2024, 3:05am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/3 "2024-10-15T03:05:45Z")

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bro we asked for a fix and your fix deleted ■■■■ near everything in my computer, at least let people know thier doing before trying to provide help, i lost really important files because of this

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<div class="post-metadata">

**Author:** ![Dearies](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dearies](https://forums.unrealengine.com/u/Dearies)\
**Post date:** [October 15, 2024, 3:12am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/4 "2024-10-15T03:12:03Z")

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even base windows apps are gone somehow  
i wouldnt recommend anyone to do this

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<div class="post-metadata">

**Author:** ![Dearies](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dearies](https://forums.unrealengine.com/u/Dearies)\
**Post date:** [October 15, 2024, 3:14am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/5 "2024-10-15T03:14:00Z")

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legit my windows is destroyed i cant even trouble shoot no drivers nothing