# Memory Calculation Error 

**URL:** <https://forums.unrealengine.com/t/memory-calculation-error/2389096>\
**Category:** Issues and Bug Reporting\
**Tags:** unreal-engine, unreal-editor-for-fortnite, bug-report, question\
**Created:** [March 14, 2025, 2:01am UTC](https://forums.unrealengine.com/t/memory-calculation-error/2389096 "2025-03-14T02:01:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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 14, 2025, 2:19pm UTC](https://forums.unrealengine.com/t/memory-calculation-error/2389096/2 "2025-03-14T14:19:53Z")

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hi @Stew ,  
This is a complex problem, and there are many different reasons for this problem.  
You situation where all you project fail is something more unique.

There was a past post, which is a very descriptive possible answer

[Memory Calculation - Editor keeps disconnecting - General / Issues and Bug Reporting](https://forums.unrealengine.com/t/memory-calculation-editor-keeps-disconnecting/1298808/15)

The other thing to do is verify your installation, due to many project failures  
[Verify your UEFN installation](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5)

When there is a single project, causing problems, it’s usually an asset, like Landscape, which is causing problems.

Check that your memory usage is 75% or less, about 75 KB, find a project with low usage and test with that.

Check the local memory size list of sizes, and check for any really large custom assets more than 10%

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