Error 8LVJ:QHGT:QHGT #4085

albotroz · 2025-12-23T04:22:21Z

albotroz
Dec 23, 2025

OS: Linux / 6.8.0-90-generic
App: 1.18.0 / flatpak-1

Description:
I am trying to unlock an encrypted container (created with Cryptomator) on my cloud storage.

Details:

Error Code 8LVJ:QHGT:QHGT
java.lang.OutOfMemoryError: Java heap space
	at [email protected]/org.cryptomator.cryptolib.common.Scrypt.scrypt(Scrypt.java:81)
	at [email protected]/org.cryptomator.cryptolib.common.Scrypt.scrypt(Scrypt.java:43)
	at [email protected]/org.cryptomator.cryptolib.common.MasterkeyFileAccess.scrypt(MasterkeyFileAccess.java:215)
	at [email protected]/org.cryptomator.cryptolib.common.MasterkeyFileAccess.unlock(MasterkeyFileAccess.java:142)
	at [email protected]/org.cryptomator.cryptolib.common.MasterkeyFileAccess.load(MasterkeyFileAccess.java:131)
	at [email protected]/org.cryptomator.cryptolib.common.MasterkeyFileAccess.load(MasterkeyFileAccess.java:119)
	at [email protected]/org.cryptomator.ui.keyloading.masterkeyfile.MasterkeyFileLoadingStrategy.loadKey(MasterkeyFileLoadingStrategy.java:74)
	at [email protected]/org.cryptomator.cryptofs.CryptoFileSystems.create(CryptoFileSystems.java:48)
	at [email protected]/org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:196)
	at [email protected]/org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:86)
	at java.base/java.nio.file.FileSystems.newFileSystem(Unknown Source)
	at java.base/java.nio.file.FileSystems.newFileSystem(Unknown Source)
	at [email protected]/org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:126)
	at [email protected]/org.cryptomator.common.vaults.Vault.createCryptoFileSystem(Vault.java:155)
	at [email protected]/org.cryptomator.common.vaults.Vault.unlock(Vault.java:174)
	at [email protected]/org.cryptomator.ui.unlock.UnlockWorkflow$$Lambda/0x0000000008546f70.use(Unknown Source)
	at [email protected]/org.cryptomator.ui.keyloading.KeyLoadingStrategy.use(KeyLoadingStrategy.java:109)
	at [email protected]/org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:82)
	at [email protected]/org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:37)
	at [email protected]/javafx.concurrent.Task$TaskCallable.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at [email protected]/org.cryptomator.ui.fxapp.FxApplicationWindows$$Lambda/0x00000000085361d0.accept(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.runWith(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

albotroz · 2025-12-26T19:48:20Z

albotroz
Dec 26, 2025
Author

It should be noted that when this error message first appeared, Cryptomator essentially became unusable.
The reason for this is that since then, download and upload speeds have slowed down.
For example, it takes 2 hours to download a 500MB file from a commercial cloud storage service.

I have already uninstalled and reinstalled Cryptomator several times (AppImage and FlatPak).

0 replies

Lazza · 2026-01-15T18:44:13Z

Lazza
Jan 15, 2026

java.lang.OutOfMemoryError: Java heap space

This means that you are running out of RAM. To verify if this is the case, you can try to close all applications except Cryptomator. It should be able to work correctly.

0 replies

albotroz · 2026-01-27T03:08:29Z

albotroz
Jan 27, 2026
Author

I don't know how is this possible? I have 48GB of RAM.
No Gaming, no AI-software.

0 replies

Lazza · 2026-01-27T12:02:32Z

Lazza
Jan 27, 2026

Are you running any Chromium-based browser? They tend to consume available memory when it's available.

That was the case for me. I closed the browser and a few programs and Cryptomator started to work again. The task manager will probably help you in figuring out if some program is leaking memory.

0 replies

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Error 8LVJ:QHGT:QHGT #4085

Uh oh!

{{title}}

Uh oh!

Replies: 4 comments

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{editor}}'s edit

{{editor}}'s edit

Uh oh!

Uh oh!

{{title}}

Uh oh!

Select a reply

Uh oh!

Uh oh!

Error 8LVJ:QHGT:QHGT #4085

Uh oh!

albotroz Dec 23, 2025

Replies: 4 comments

Uh oh!

albotroz Dec 26, 2025 Author

Uh oh!

Lazza Jan 15, 2026

Uh oh!

Uh oh!

albotroz Jan 27, 2026 Author

Uh oh!

Lazza Jan 27, 2026

albotroz
Dec 23, 2025

albotroz
Dec 26, 2025
Author

Lazza
Jan 15, 2026

albotroz
Jan 27, 2026
Author

Lazza
Jan 27, 2026