Search Issue Tracker

Fixed in 2021.1

Fixed in 2019.4, 2020.1, 2020.2

Votes

2

Found in

Issue ID

1287098

Regression

Yes

Unity fails to open project with error: Failed to resolve packages: An operation that requires exclusive access to the project..

Packman

-

For some users Unity is failing to open and shows the following error:

Failed to resolve packages: An operation that requires exclusive access to the project is already running and must be completed before another can be started.. No packages loaded.

This issue happens only if the resolve package operation takes over 2 minutes to complete. Users will find this failure randomly while opening their projects.

Comments (9)

  1. 27e48159b1ed6c45da66739348b084e9?d=mm

    Toylips

    Nov 20, 2020 00:31

    2019.4.14f1 same

  2. 9bfa545cc50ebbc621ab399dd3eae318?d=mm

    Arthur_Kenichi

    Nov 18, 2020 05:11

    I had this problem in 2020.1.13f1. My workaround was selecting Continue instead of Retry or Quit, then the project opened with a lot of errors from missing packages, then I opened a scene of the game and right clicked on a random asset in the Project tab/window and then selected Reimport All.

  3. 6924cc55b872c64217b3c1a75a0de8a7?d=mm

    Silverlock

    Nov 17, 2020 15:42

    I installed Unity 2019.4.14f1 yesterday and this error occurs each time I open Unity. The description says it's fixed in 2019.4. Is that accurate? Is there a patch I need?

  4. 5e6feb8dd2036eea0b4116d01050fb3b?d=mm

    AdamBebko

    Nov 16, 2020 22:54

    I also have this problem in 2020.1.11f1 can't figure out how to resolve it.

  5. Da612f88eb161e5dc45d6d217d308080?d=mm

    TCROC

    Nov 16, 2020 05:27

    I'm currently on 2019.4.14f1 and this error is still occurring for me

  6. D5d7b4ba4213de930b6b78f22c647931?d=mm

    ikiable

    Nov 15, 2020 10:32

    Still persist in 2020.2.0b11

  7. 2a98830734499333f5e18bbc9e6e1a70?d=mm

    tacman1123

    Nov 12, 2020 11:16

    Still happens in 2020.2b10

    Because I'm on a very slow internet connection, I frequently have problems with Unity and the Package Manager (like checking for updates in the foreground when browsing, instead of in the background and displaying what's cached).

  8. Abc87ffd2761d35053c5d2f78dc91380?d=mm

    nehvaleem

    Nov 02, 2020 17:47

    Is there any workaround for this issue? I am unable to rebuild my project using the latest available beta (2020.2.0b9)

  9. 47aad66831469eb49af6055ceaf850c9?d=mm

    GoodpatchBenjamin

    Oct 26, 2020 12:45

    We require our customer to download our package, which is setup to load from github using git lfs, and this error occurs. I hope this gets fixed soon as our business is depending on that.

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.