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Fixed

Fixed in 2023.2.20f1, 6000.0.1f1, 7000.0.0a1

Votes

8

Found in

6000.0.0b15

Issue ID

UUM-64341

Regression

No

"Unexpected transport error from import worker 0" error is thrown when importing an asset

Scripting Buildtime

-

Reproduction steps:
1. Open the attached “ASDQWE” project
2. Import an asset into the project
3. Observe the Console Window

Expected result: No error is thrown
Actual result: "Unexpected transport error from import worker 0. code=10054 error=An existing connection was forcibly closed by the remote host." error is displayed

Reproducible with: 2023.2.5f1

Reproducible on: Windows 11 (user’s)
Not reproducible on: No other environment tested

Notes:
- The issue could not be reproduced locally by CQA
- The user reported that the issue does not reproduce constantly
- The user reported that the issue could be reproduced on different setups

  1. Resolution Note (fix version 6000.0.1f1):

    Fixed the crash of asset import worker that could happen due to many code changes and domain reloads within the worker

  2. Resolution Note (fix version 2023.2.20f1):

    Fixed the crash of asset import worker that could happen due to many code changes and domain reloads within the worker

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Comments (14)

  1. Eran-Yaacobi

    May 10, 2024 23:14

    I'm having the same issue even after upgrading to Unity 2023.2.20, which suggests that the error is not fully fixed.

    On my computer (and two others with the same project), at some point the error starts to show every 40 seconds or so, along with Unity taking up 30GB every time (which really hurts performance). The issue does not go away even on restarting Unity, but does go away for a couple of days (though sometimes less - even just a couple of hours) on 'Reimport all', which suggests that the source of the error is that something causes the asset database to become corrupted.

  2. spiney199

    Feb 29, 2024 12:02

    I believe I have more info on the cause of this here: https://forum.unity.com/threads/constant-unexpected-transport-error-from-import-worker-errors.1546922/

  3. zenbin3d

    Feb 21, 2024 14:58

    Same here! Supper annoying! Happens almost every 50 seconds.
    I think it's related to Project Settings -> Editor -> Asset Pipeline - Parallel Import setting.

  4. zalogic

    Feb 21, 2024 14:55

    Happens even more aggressively in Unity 2023.2.9f1 and 2023.2.10f1.

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