# UEFN Project crashes while opening - Unable to access it **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, crash, question, fortnite\ **Created:** [November 20, 2025, 1:49am UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689 "2025-11-20T01:49:54Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 1:49am UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/1 "2025-11-20T01:49:54Z")
### Summary I can no longer access one of my projects because the editor crashes after briefly freezing at a specific percentage. ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Stability ### Steps to Reproduce I’ve closed the editor after modifying a project and then tried to open it ### Expected Result The project should open ### Observed Result After trying to open it it freezes at 83% and then goes to 96% and then crashes ### Platform(s) PC ---
**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\ **Post date:** [November 20, 2025, 4:59pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/2 "2025-11-20T16:59:08Z")
Hi MajorBlues, Is there a crash dialogue that appears when the crash happens? - If so, what does it say? ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 6:42pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/3 "2025-11-20T18:42:26Z")
Hello, it used to be an EXCEPTION\_ACCESS\_VIOLATION reading address 0x0000000000000030 but now it opens without crashing but it tells me “Failed to load map! Umap appears to be an asset file” and consequently I still can’t access the project… I think it’s lost because I didn’t have revision control (loadings were too long) or backups ---
**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:** [November 20, 2025, 6:42pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/4 "2025-11-20T18:42:38Z")
hi @Majorrblues , Have you changed some project settings? The changes are written to your project files. Let’s say your project is called “FeatureAlphaTycoon3810 “ as in the format ProjectName.uefnproject In Directory C:\Users\%USERNAME%\Documents\Fortnite Projects\FeatureAlphaTycoon3810 FeatureAlphaTycoon3810.uefnproject Check the date last modified. If it’s very recent, try and remember what you changed and look for the changes in the above file, change it back in Notepad and save this file. Its all about remembering the last change you made. Did you insert a large asset, change its properties back The UMAP file is in C:\Users\jimgi\Documents\FortniteProjects\FeatureAlphaTycoon3810\Content Try and open in Notepad FeatureAlphaTycoon3810.umap, where this is really ProjectName. umap This will look like a binary file, but just try to open this. If you cannot open this file, Open a new project and try importing everything ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 6:52pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/5 "2025-11-20T18:52:21Z")
The only thing I did that might seem strange to me was increasing the Loading Range of the Main Partition (the project had a fairly large landscape, but not too much). Other than that, I don’t think anything strange. Also, I hadn’t closed the editor for a long time (the problem occurred when I closed and reopened it) so I did a lot of things during and it’s hard for me to remember it. Now I’ll try to do what you advised me ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 6:57pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/6 "2025-11-20T18:57:32Z")
Im able to open the UMAP file ---
**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:** [November 20, 2025, 7:31pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/7 "2025-11-20T19:31:01Z")
> _`Im able to open the UMAP file`_ That means there is corruption in the file structure; possibly, the only way to recover this is open a new project import/migrate the original project into the new project, basically, a level has broken in the project, and no tools exist to externally fix the project [How to copy a UEFN project - Development / Getting Started & Setup - Epic Developer Community Forums](https://forums.unrealengine.com/t/how-to-copy-a-uefn-project/1236151/4) [How to duplicate or copy a UEFN Project Easily! #uefn](https://www.youtube.com/watch?v=cqgE7VzhSNM&t=1s)#fortnite There are loads of videos and articles for copying, but just not any about your error ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 7:49pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/8 "2025-11-20T19:49:21Z")
I’ve also tried to just move the umap of the project by copying it from the folder to the new project’s folder, but with no luck (used to crash the same). I think no fixes for corrupted umap ---
**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:** [November 20, 2025, 9:57pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/9 "2025-11-20T21:57:02Z")
> [@Majorrblues](#): > > I think no fixes for corrupted umap Yes, you are probably right, there never were for the original UE5 engine ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 20, 2025, 10:56pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/10 "2025-11-20T22:56:49Z")
Unfortunately… the only annoying thing is not really knowing what’s causing it. Thanks for the advices anyway ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 21, 2025, 5:28pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/11 "2025-11-21T17:28:36Z")
@Flak Is there any possibility for a solution about this? ---
**Author:** ![Majorrblues](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Majorrblues](https://forums.unrealengine.com/u/Majorrblues)\ **Post date:** [November 22, 2025, 4:17am UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/12 "2025-11-22T04:17:01Z")
Well now the crashes are back, always at 83% and then 96%. I’ll to provide logs if needed ![Capture123](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/2/3/62327ae198752419fc1cb1e45b2baa9d450a1c48.png) ---
**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\ **Post date:** [November 24, 2025, 4:19pm UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/13 "2025-11-24T16:19:25Z")
Cheers Jimbo, So, I’ve been seeing some ‘EXEPTION\_ACCESS\_VIOLATION’ crashes recently on my laptop as well. (16GB RAM) The 0x000etc address is a memory (RAM) address, I was able to troubleshoot this by closing other programs taking up a lot of RAM (Chrome) and then launching, also I’ve had luck just restarting my laptop and launching UEFN as the first thing. The recent patches have cleared this up for me and I’m currently able to launch UEFN with Chrome open. (My Laptops RAM is maxed out though - With UEFN taking 6GB and Chrome taking 800MB) ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [May 19, 2026, 1:50am UTC](https://forums.unrealengine.com/t/uefn-project-crashes-while-opening-unable-to-access-it/2676689/14 "2026-05-19T01:50:46Z")
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