[MCL-12493] Launcher shows a warning when first trying to download a new version of the asset index

The bug

When the launcher notices that there's a new version of the asset index available, it first shows the following warning instead of just downloading the new assets.

This issue usually happens when a snapshot has been released but not downloaded yet. The first try of clicking onto the "Play" button will fail in this case, but after that the game will be able to launch successfully.

Failed to download file, the file contents differ from what was expected.
Name: 1.15.json
URL: https://launchermeta.mojang.com/v1/packages/a3168de4f437fda8464afbaeb28866ee5b279426/1.15.json
Filename on disk: 1.15.json
Path: D:\Users\Daniel\Games\Minecraft\AppData\assets\indexes\1.15.json
Exists: File

Linked issues

is duplicated by 3

MC-168352 Failed to download 1.15.1 File, unexpected contents Resolved

MCL-12830 error during the installation or initialization of the game Resolved

MCL-12837 can't log in Resolved

relates to 1

MCL-12570 Versions which inherit and re-define a library cause corrupted downloads Resolved

Attachments

launcherfailsfirsttime.txt

Comments 9

[MOD] Greymagic27 2019-11-08T14:15:41Z

Looks like a dupe of: MCL-5546

violine1101 2019-11-09T12:23:40Z

Nope, this one is not caused by incompatible software. It's caused by the launcher detecting that the asset index has changed, but throwing an error instead of just updating it. Note the different error message.

[MOD] Greymagic27 2019-11-10T11:53:50Z

I assumed dupe because this one got marked as a duplicate: MCL-10593

violine1101 2019-11-10T12:05:08Z

That's another file though (xml), not the asset index.

[MOD] Greymagic27 2019-11-13T18:34:52Z

I had this happen to me and when I tried to launch it again it worked fine

violine1101 2019-11-16T17:46:41Z

Added more info to the ticket - but this issue is no longer happening to me. Might be fixed in the beta launcher?

SPGoding 2019-12-17T13:46:51Z

When I was launching 1.15.1 today I still encountered this. I was using 2.1.10581 (which cannot be found in the Affected Version/s list).

violine1101 2019-12-17T17:17:53Z

Added it, the version is called "2.1.10578-2.1.10581 (Beta)" since different operating systems have different launcher version numbers.

migrated 2019-12-24T13:50:29Z

Confirming this happens every now and again for me - I hadn't played for 7 days, my last log was 2019-12-17-1.log.gz . No crash report. A second attempt at Play always works. assets/indexes shows 1.15.json from today and 1.14.json from 04/07/2019. Windows 8. Minecraft 1.15.1 Vanilla, no mods, selecting latest snapshots. Part of launcher_log.txt has:

[Info: 2019-12-24 13:29:54.0869371: GameCallbacks.cpp(142)] Launcher/launcher (main) Error Download from [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json] had invalid checksum! Expected: 62745391056f1d0e1ffc808a0d4f0145b668ca24 got: 037b739b6b40bc18f0db68d83ae59b74fa20d98d
 [Warning: 2019-12-24 13:29:54.0872507: Downloadable.cpp(196)] Couldn't download C:\Users\bob\AppData\Roaming\.minecraft\assets\indexes\1.15.json: DOWNLOAD_HASH_MISMATCH
 URL: [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json]
 Name: 1.15.json
 File: C:\Users\bob\AppData\Roaming\.minecraft\assets\indexes\1.15.json
 [Info: 2019-12-24 13:29:54.0873441: GameCallbacks.cpp(142)] Launcher/launcher (main) Error Unable to download [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json] to C:\Users\bob\AppData\Roaming\.minecraft\assets\indexes\1.15.json
 [Info: 2019-12-24 13:30:21.2785404: GameController.cpp(345)] Creating ClientStarter with id 2
 [Info: 2019-12-24 13:30:21.2785946: NetQueue.cpp(204)] NetQueue: Setting up.
 [Info: 2019-12-24 13:30:21.2791668: GameCallbacks.cpp(142)] Launcher/launcher (main) Info Preparing to launch minecraft client for 1.15.1
 [Info: 2019-12-24 13:30:21.2805619: GameCallbacks.cpp(142)] Launcher/launcher (main) Warn Local file C:\Users\bob\AppData\Roaming\.minecraft\assets\indexes\1.15.json has wrong SHA-1 hash, expected 62745391056f1d0e1ffc808a0d4f0145b668ca24 but was 037b739b6b40bc18f0db68d83ae59b74fa20d98d
 [Info: 2019-12-24 13:30:21.2809342: GameCallbacks.cpp(142)] Launcher/launcher (main) Info Deleted Local file C:\Users\bob\AppData\Roaming\.minecraft\assets\indexes\1.15.json
 [Info: 2019-12-24 13:30:21.2809767: GameCallbacks.cpp(142)] Launcher/launcher (main) Debug Prepared asset index
 [Info: 2019-12-24 13:30:21.2811738: NetQueue.cpp(528)] NetQueue: worker thread started.
 [Info: 2019-12-24 13:30:21.2841052: NetQueue.cpp(543)] NetQueue: Starting net action [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json]
 [Error: 2019-12-24 13:30:21.2865892: ControllerInterface.cpp(95)] updateConfigurationParams.configuration.id: Unknown key
 [Info: 2019-12-24 13:30:21.7162947: NetQueue.cpp(408)] NetQueue: Primary ip: 143.204.93.135, Url: launchermeta.mojang.com
 [Info: 2019-12-24 13:30:21.7164097: NetQueue.cpp(480)] NetQueue: Action finished: [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json]
 [Info: 2019-12-24 13:30:21.7283103: GameCallbacks.cpp(142)] Launcher/launcher (main) Debug Download from [https://launchermeta.mojang.com/v1/packages/62745391056f1d0e1ffc808a0d4f0145b668ca24/1.15.json] passed checksum check.

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