# Memory Calculation Failure **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [November 14, 2026, 5:43am UTC](https://forums.unrealengine.com/t/memory-calculation-failure/2855694 "2026-11-14T05:43:03Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![vageuly](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/vageuly/32/1151969_2.png) [@vageuly](https://forums.unrealengine.com/u/vageuly)\ **Post date:** [November 14, 2026, 5:43am UTC](https://forums.unrealengine.com/t/memory-calculation-failure/2855694/1 "2026-11-14T05:43:03Z")
### Summary When trying to push a memory calculation, all other Publishing Validation checks succeed, but memory calculation never succeeds, with no warning to the output log. In the memory calculation tab, it shows ‘Error | Calcluation failed; see output log’ but in the output log there is nothing pointing to a failure. There was a similar report with 43.00, but it was closed. This issue is still persisting with 43.10, but we did not have this issue with 43.00. > [@\[Critical\] Memory calculation fails after 43.00](https://forums.unrealengine.com/t/critical-memory-calculation-fails-after-43-00/2848393/34): > > FORT-1185425 is ‘Closed’ as ‘Fixed’. The issue will be addressed in . We have tried to run it on multiple different computers, launched session on PC and mobile, and redownloaded the entire project and nothing has worked. We did find a work around that changing to the following settings would load the memory calculation correctly, but it is not preferred. World Settings: | Partition | Cell size | Loading range | | --- | --- | --- | | MainPartition | 3,200 cm | 19,200 cm | | HLOD partition | 6,400 cm | 19,200 cm | ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Publishing ### Steps to Reproduce 1. Go to Project \> Launch Memory Calculation 2. Fortnite correctly launches a session and ends the session. 3. Publishing report shows everything else reporting correctly, but the memory calculation fails. Alternatively, launching a session, ending a session and then launching a memory calculation still fails. ### Expected Result Map should generate a memory calculation or if there is an error, show in the output log correctly when mentioned. ### Observed Result There is no message in the output log when it fails. ### Platform(s) PC ### Island Code 8402-7861-9119 ### Upload an image ![Mem Calc Error.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/e/6/8e6aa510aea26c5f5cf8dadc34e330b366066e9a.png)[UnrealEditorFortnite.log](https://forums.unrealengine.com/uploads/short-url/fyVUdXsDRhsFgZxmykisa891Ds.log) (8.59 MB)[FNLogs.zip](https://forums.unrealengine.com/uploads/short-url/h6Memlhc9KbxH8S9WcebyvkHPx2.zip) (4.64 MB)[UEFNLogs.zip](https://forums.unrealengine.com/uploads/short-url/wfGJ4wf3BTnh28Kww2d1ZmDnovp.zip) (2.41 MB) ### Additional Notes Logs show two different branches trying mem calcs for uefn, both failing at the following cell sizes, but but succeeding at the work arounds cell size. | Partition | Cell size | Loading range | | --- | --- | --- | | MainPartition | 1,600 cm | 19,200 cm | | HLOD partition | 3,200 cm | 19,200 cm | ---
**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 14, 2026, 4:07pm UTC](https://forums.unrealengine.com/t/memory-calculation-failure/2855694/2 "2026-11-14T16:07:52Z")
hi @vageuly Please can you read and try my post in [[Critical] Memory calculation fails after 43.00 - General / Issues and Bug Reporting - Epic Developer Community Forums](https://forums.unrealengine.com/t/critical-memory-calculation-fails-after-43-00/2848393/35) The method appears to have changed ---
**Author:** ![vageuly](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/vageuly/32/1151969_2.png) [@vageuly](https://forums.unrealengine.com/u/vageuly)\ **Post date:** [November 14, 2026, 4:23pm UTC](https://forums.unrealengine.com/t/memory-calculation-failure/2855694/3 "2026-11-14T16:23:09Z")
We tried this as well after seeing your post there and it didn’t work for us either. ---
**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 14, 2026, 6:55pm UTC](https://forums.unrealengine.com/t/memory-calculation-failure/2855694/4 "2026-11-14T18:55:03Z")
HI @vageuly The errors are from the EOSSDK which is part of Epic Games Launcher needs to be unistalled Epic Games Launcher will reload automatically ````javascript [2026.11.14-04.46.07:600][591]LogEOSSDK: LogEOSAuth: Verify access token started. LocalUserId=82a...24a [2026.11.14-04.46.10:267][599]LogEOSSDK: LogEOSAuth: Verify access token succeeded. LocalUserId=82a...24a [2026.11.14-04.46.27:924][652]LogNet: UIpConnection::HandleSocketSendResult: Socket->SendTo failed with error 10 (SE_ENOTSOCK). [UNetConnection] RemoteAddr: 3.237.148.133:15012, Name: IpConnection_0, Driver: Name:IpNetDriver_0 Def:BeaconNetDriver IpNetDriver_0, IsServer: NO, PC: NULL, Owner: ValkyrieBeaconClient_0, UniqueId: [2026.11.14-04.50.59:267][466]LogEOSSDK: Warning: LogHttp: 000001656E9B2A00: libcurl info message cache 0 (URL rejected: No host part in the URL) [2026.11.14-04.50.59:267][466]LogEOSSDK: Warning: LogHttp: 000001656E9B2A00: libcurl info message cache 1 (Closing connection) [2026.11.14-04.50.59:600][467]LogEOSSDK: Warning: LogHttp: Retry exhausted on /api/lease/67731b3b183e4efabf9597f04b38ddf9?scope=game [2026.11.14-04.50.59:600][467]LogEOSSDK: Warning: LogEOS: Failed to connect to the backend. ServiceName=[PlayerLease], OperationName=[Createlease], Url=[] [2026.11.14-04.51.37:600][581]LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 4802.713867, Update Interval: 314.447449_auth_token_refreshed] Cached OSSv2 auth token (1686 chars). ``` This EOSSDK needs to be remove using Windows Uninstall ```` ![Screenshot (31)](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/f/5/1f5f232fde0ce2dd0a853ddeb6958d34a6c012b7.png) ![Screenshot (30)](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/7/5/3759de74e2ec803893307df3dfcd7336a8f08087.png)