Can not open Vault: WebDAV/Dokany/FUSE Problem

Hi, I use Cryptomator on Linux and Windows.
The access with Linux works fine but the vault does not open under windows. I can not open the Vault on Windows with Dokany - only WebDAV works (see below for the logging with dokany).
I am not really sure if it is the dokany driver version or the mixed access with Linux/Windows. (same result with sync with Dropbox or pCloud).

Now I have the question: What is the disadvantage of using WebDAV?

Configuration:
Cryptomator 1.5.17
Linux Mint 20.2, FUSE
Windows 10, Dokany 1.5.0.3000

Debug Logging on with Windows access to the vault fails:

06:26:18.333 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
06:26:18.334 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: false
06:26:18.340 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Start unlock workflow for Test
06:26:21.297 [JavaFX Application Thread] TRACE o.c.ui.unlock.UnlockController - UnlockController.unlock()
06:26:21.300 [App Background Thread 006] DEBUG o.cryptomator.cryptofs.ReadonlyFlag - Vault opened for read and write.
06:26:21.533 [App Background Thread 006] DEBUG o.c.c.common.MasterkeyBackupHelper - Verified backup file: L:\Dropbox\Test\masterkey.cryptomator.B3FB3D7E.bkup
06:26:21.536 [App Background Thread 006] DEBUG o.c.frontend.dokany.MountFactory - Mounting on J:\: ...
06:26:21.536 [App Background Thread 006] INFO  com.dokany.java.DokanyMount - Dokany API/driver version: 150 / 0
06:26:21.539 [dokanMount-4-main] INFO  org.cryptomator.common.vaults.Vault - Unmounted vault 'Test'
06:26:21.539 [dokanMount-4-main] TRACE org.cryptomator.common.vaults.Vault - Trying to close associated CryptoFS...
06:26:21.539 [dokanMount-4-main] WARN  org.cryptomator.common.vaults.Vault - Unexpected unmount and lock of vault Test
com.dokany.java.DokanyException: DokanMain returned error code-4: Dokan mount failed - Driver answer that something is wrong.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	at java.base/java.lang.Thread.run(Unknown Source)
06:26:21.539 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
06:26:21.540 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: true
06:26:44.037 [App Background Thread 006] ERROR o.c.frontend.dokany.MountFactory - Mounting failed.
com.dokany.java.DokanyException: DokanMain returned error code-4: Dokan mount failed - Driver answer that something is wrong.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	at java.base/java.lang.Thread.run(Unknown Source)
06:26:44.037 [App Background Thread 006] TRACE org.cryptomator.common.vaults.Vault - Trying to close associated CryptoFS...
06:26:44.038 [JavaFX Application Thread] INFO  o.c.ui.unlock.UnlockWorkflow - Unlock of 'Test' failed.
06:26:44.038 [JavaFX Application Thread] ERROR o.c.ui.unlock.UnlockWorkflow - Unlock failed for technical reasons.
org.cryptomator.common.vaults.Volume$VolumeException: Unable to mount Filesystem
	at org.cryptomator.common.vaults.DokanyVolume.mount(DokanyVolume.java:48)
	at org.cryptomator.common.vaults.Vault.unlock(Vault.java:151)
	at org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:100)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:81)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:44)
	at javafx.concurrent.Task$TaskCallable.call(Task.java:1425)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.cryptomator.frontend.dokany.DokanyMountFailedException: Error while mounting.
	at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:130)
	at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:116)
	at org.cryptomator.common.vaults.DokanyVolume.mount(DokanyVolume.java:43)
	... 11 common frames omitted
Caused by: com.dokany.java.DokanyException: DokanMain returned error code-4: Dokan mount failed - Driver answer that something is wrong.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	... 1 common frames omitted
06:26:44.061 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultState - Failed transiting into state PROCESSING: Expected state was notLOCKED.
06:27:37.719 [JavaFX Application Thread] DEBUG

Have a look at this thread:

Thanx for the hint with the installation.
I uninstalled and installed Dokany again. Does not work.
Now I used the Dokany Setup.exe instead of the msi-package.
This works! - The msi-Installation did not work.

Mhm, that is interesting. Never heard of that before and also didn’t thought this would make a difference.

Here’s the same problem. Windows 10, Cryptomator 1.5.17, Dokany 150.
Cryptomator worked fine in version 1.5.16 (or 15,… didn’t remember). After the upgrade to 1.5.17 I get these exceptions when trying to mount a vault using dokany:

12:10:00.511 [main] INFO  org.cryptomator.launcher.Cryptomator - Starting Cryptomator 1.5.17 on Windows 10 10.0 (amd64)
12:10:00.524 [main] DEBUG org.cryptomator.logging.DebugMode - Debug mode enabled
12:10:00.525 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Client] Reading IPC port from C:\Users\XXXXXX\AppData\Roaming\Cryptomator\ipcPort.bin
12:10:00.525 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Client] Connecting to port 63988...
12:10:01.147 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Client] Failed to connect.
12:10:01.193 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Server] Wrote IPC port 65420 to C:\Users\XXXXXX\AppData\Roaming\Cryptomator\ipcPort.bin
12:10:01.196 [main] DEBUG o.c.launcher.IpcProtocolImpl - Received launch args: 
12:10:01.197 [main] DEBUG org.cryptomator.launcher.Cryptomator - Did not find running application instance. Launching GUI...
12:10:01.447 [main] DEBUG o.c.ui.traymenu.TrayIconController - initialized tray icon
12:10:01.453 [main] DEBUG o.cryptomator.ui.launcher.UiLauncher - Showing application...
12:10:01.457 [main] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 001
12:10:01.457 [App Background Thread 001] DEBUG o.c.ui.launcher.FxApplicationStarter - Starting JavaFX runtime...
12:10:01.462 [main] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 002
12:10:02.113 [JavaFX Application Thread] INFO  o.c.ui.launcher.FxApplicationStarter - JavaFX Runtime started.
12:10:02.336 [JavaFX Application Thread] TRACE o.cryptomator.ui.fxapp.FxApplication - FxApplication.start()
12:10:03.170 [JavaFX Application Thread] DEBUG org.cryptomator.ui.common.FontLoader - Loaded family: Font Awesome 5 Free Solid
12:10:03.199 [JavaFX Application Thread] DEBUG o.c.u.m.MainWindowTitleController - init MainWindowTitleController
12:10:03.435 [JavaFX Application Thread] DEBUG o.c.u.m.MainWindowController - init MainWindowController
12:10:03.536 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - has visible stages: true
12:10:04.400 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Showing MainWindow
12:10:06.644 [JavaFX Application Thread] DEBUG o.c.w.k.WindowsProtectedKeychainAccess - Attempting to load keychain from C:\Users\XXXXXX\AppData\Roaming\Cryptomator\keychain.json
12:10:08.057 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
12:10:08.062 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: false
12:10:08.074 [JavaFX Application Thread] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 003
12:10:08.074 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Start unlock workflow for XXXXXX
12:10:08.104 [App Background Thread 003] DEBUG o.cryptomator.cryptofs.ReadonlyFlag - Vault opened for read and write.
12:10:08.372 [App Background Thread 003] DEBUG o.c.c.common.MasterkeyBackupHelper - Verified backup file: C:\Users\XXXXXX\XXXXXX\masterkey.cryptomator.5BC91A2C.bkup
12:10:08.542 [App Background Thread 003] DEBUG o.c.frontend.dokany.MountFactory - Mounting on K:\: ...
12:10:08.586 [App Background Thread 003] INFO  com.dokany.java.DokanyMount - Dokany API/driver version: 150 / 0
12:10:08.605 [dokanMount-1-main] INFO  org.cryptomator.common.vaults.Vault - Unmounted vault 'XXXXXX'
12:10:08.605 [dokanMount-1-main] TRACE org.cryptomator.common.vaults.Vault - Trying to close associated CryptoFS...
12:10:08.607 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
12:10:08.608 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: true
12:10:08.611 [dokanMount-1-main] WARN  org.cryptomator.common.vaults.Vault - Unexpected unmount and lock of vault XXXXX
com.dokany.java.DokanyException: DokanMain returned error code-3: Dokan mount failed - Cannot install driver.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	at java.base/java.lang.Thread.run(Unknown Source)
12:10:31.083 [App Background Thread 003] ERROR o.c.frontend.dokany.MountFactory - Mounting failed.
com.dokany.java.DokanyException: DokanMain returned error code-3: Dokan mount failed - Cannot install driver.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	at java.base/java.lang.Thread.run(Unknown Source)
12:10:31.083 [App Background Thread 003] TRACE org.cryptomator.common.vaults.Vault - Trying to close associated CryptoFS...
12:10:31.084 [JavaFX Application Thread] INFO  o.c.ui.unlock.UnlockWorkflow - Unlock of 'XXXXXX' failed.
12:10:31.085 [JavaFX Application Thread] ERROR o.c.ui.unlock.UnlockWorkflow - Unlock failed for technical reasons.
org.cryptomator.common.vaults.Volume$VolumeException: Unable to mount Filesystem
	at org.cryptomator.common.vaults.DokanyVolume.mount(DokanyVolume.java:48)
	at org.cryptomator.common.vaults.Vault.unlock(Vault.java:151)
	at org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:100)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:81)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:44)
	at javafx.concurrent.Task$TaskCallable.call(Task.java:1425)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.cryptomator.frontend.dokany.DokanyMountFailedException: Error while mounting.
	at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:130)
	at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:116)
	at org.cryptomator.common.vaults.DokanyVolume.mount(DokanyVolume.java:43)
	... 11 common frames omitted
Caused by: com.dokany.java.DokanyException: DokanMain returned error code-3: Dokan mount failed - Cannot install driver.
	at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
	... 1 common frames omitted
12:10:31.127 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultState - Failed transiting into state PROCESSING: Expected state was notLOCKED.
12:10:40.357 [JavaFX Application Thread] DEBUG o.c.f.fuse.mount.WindowsMounter - Failed to find a WinFsp installation; that's only a problem if you want to use FUSE on Windows. Exception text: "Can't find winfsp library. Please make sure that winfsp is installed or configure the path to dll manually using the `jnrfuse.winfsp.path` property"
12:10:40.507 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Showing Preferences

I uninstalled cryptomator and dokany several times always with reboot and check, whether the dokany files in c:\windows are away. I unistalled dokany and installed it using the dokany setup exe. Nothing helps. Right now I’m using the WebDAV option. But would be nice to have this fixed.

How did you installed Dokany? Via the exe or the msi installer?

To see if it is only Cryptomator, try the following manual:

If the above test fail and you own a github account, you can open a ticket at the Dokany issue tracker:

And for a speedy access of your vault files, consider using WinFSP: How to use it

The test failed for me. => “Can’t install driver”
Now I’ll try WinFSP
That seems to work properly.
Thanks!