# Parallel upstream flow in operation

**URL:** <https://forums.unrealengine.com/t/parallel-upstream-flow-in-operation/2679810>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, bug-report, editor, fortnite\
**Created:** [November 28, 2025, 6:55pm UTC](https://forums.unrealengine.com/t/parallel-upstream-flow-in-operation/2679810 "2025-11-28T18:55:08Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![david2metro11](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@david2metro11](https://forums.unrealengine.com/u/david2metro11)\
**Post date:** [November 28, 2025, 6:55pm UTC](https://forums.unrealengine.com/t/parallel-upstream-flow-in-operation/2679810/1 "2025-11-28T18:55:08Z")

</div>

### Summary

I’m trying to create a private version to publish and I’m getting this error. Does anyone know how to fix it?

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Matchmaking

### Steps to Reproduce

Creating a private version with the player on the map causes this error

### Expected Result

Create a private version and calculate memory without problems

### Observed Result

Parallel upstream flow in operation

### Platform(s)

Computer

### Upload an image

 ![Captura de pantalla 2025-11-28 194148.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/b/8/1b83a15d3659aaf1ddfce6051a3126a5aea8b11e.png)  
 ![Captura de pantalla 2025-11-28 194545.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/4/6/246ef29d6c91769b3c20913d44cec57c3dfb4ca4.png)

---

<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:** [November 28, 2025, 7:59pm UTC](https://forums.unrealengine.com/t/parallel-upstream-flow-in-operation/2679810/2 "2025-11-28T19:59:17Z")

</div>

> [@david2metro11](#):
>
> Parallel upstream

Please try to delete all the files in

copy C:\Users%USERNAME%\AppData\Local\UnrealEditorFortnite to somewhere like  
My documents

```auto
del C:\Users\%USERNAME%\AppData\Local\UnrealEditorFortnite

```

Then, is this does not works, make sure you “Verify” as [here](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5)

---

<div class="post-metadata">

**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [May 27, 2026, 6:55pm UTC](https://forums.unrealengine.com/t/parallel-upstream-flow-in-operation/2679810/3 "2026-05-27T18:55:08Z")

</div>

This topic was automatically closed after 180 days. New replies are no longer allowed.