SOLVED An unexpected error occurred when upgrading to version 1.5.16

When prompted, I upgrade from 1.5.15 to version 1.5.16. When I start my computer this morning, I get the error message “An unexpected error occurred”. I can manually unlock the vaults.

I use Windows restore to fall back to the earlier version (1.5.15). The Cryptomator app disappears.

I install the old version of Cryptomator 1.5.15 and get the same error message for each vault, “An unexpected error occurred”. Now I cannot open the vaults manually.

I install version 1.5.16 again. I still get the error messages, but I can open the vaults manually.

Windows 10, 19042.867
Cryptomator 1.5.16 .2831

AN UNEXPECTED ERROR OCCURED

VAULT A version 1.5.16
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 more
Caused by: com.dokany.java.DokanyException: Mount timed out
at com.dokany.java.DokanyMount.mount(DokanyMount.java:121)
at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:126)
… 13 more

VAULT B version 1.5.16
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 more
Caused by: com.dokany.java.DokanyException: Mount timed out
at com.dokany.java.DokanyMount.mount(DokanyMount.java:121)
at org.cryptomator.frontend.dokany.MountFactory.mount(MountFactory.java:126)
… 13 more

VAULT A version 1.5.15
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 more
Caused by: com.dokany.java.DokanyException: DokanMain returned error code-5: Dokan mount failed - Cannot assign a drive letter or mount point. Probably already used by another volume.
at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
… 1 more

VAULT B version 1.5.15
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 more
Caused by: com.dokany.java.DokanyException: DokanMain returned error code-5: Dokan mount failed - Cannot assign a drive letter or mount point. Probably already used by another volume.
at com.dokany.java.DokanyMount.lambda$mount$2(DokanyMount.java:98)
… 1 more

See https://github.com/cryptomator/cryptomator/issues/1627#issuecomment-826059258

Thank you @infeo, that did the trick.

On a side note, I made a “clean” install of 1.5.16 on an older pc, and it worked like a charm.

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