Nextcloud crashes when opened from system tray

[lraven456]

⚠️ Before submitting, please verify the following: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I have searched for it).
• Nextcloud Server and Desktop Client are up to date. See Server Maintenance and Release Schedule and Desktop Releases for supported versions.
• I agree to follow Nextcloud's Code of Conduct

Bug description

When I click on the Nextcloud icon in the system tray, the icon disappears. When I check task manager, I see that Nextcloud is no longer running.
This happens seemingly randomly and most of the time when I click the system tray icon, it works normally. I have not noticed any pattern of what might cause it to happen. I have observed this issue multiple times, also when using the other 34.0.X versions of the client. The issue did not occur in the 33.0.7 version.

Steps to reproduce

1. Click the Nextcloud icon on the system tray

Expected behavior

It should not end Nextcloud.

Which files are affected by this bug

NA

Operating system

Windows

Which version of the operating system you are running.

Windows 11

Installation method

Official Windows MSI

Nextcloud Server version

34.0.4

Nextcloud Desktop Client version

34.0.4

Did this occur after an update or on a clean installation?

Major version update (i.e. 4.0.0 → 33.0.0)

Are you using the Nextcloud Server Encryption module?

No

Are you using an external user-backend?

• Default internal user-backend
• LDAP or Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

Additional info

I don't work with files in the client very often so I don't know if Nextcloud was still working properly before I clicked on the icon. I don't know if it is a direct cause and effect of "Click icon -> Nextcloud crashes" or if Nextcloud was already not running and the icon was simply stuck.

I created a bug report after this happened and I can upload it if I am given a Nextcloud share link.

[camilasan]

Is there any crash reports in the Even Viewer?

[PenIv]

I can confirm this (not so) intermittent crash of the client and it does happen after click. No obvious errors in the client log files but the most recent Event Viewer shows
"Faulting application name: nextcloud.exe, version: 34.0.4.10292, time stamp: 0x6aaa7875
Faulting module name: nextcloud_csync.dll, version: 0.0.0.0, time stamp: 0x6aaa76cd
Exception code: 0xc0000005
Fault offset: 0x00000000000bdf6d
Faulting process id: 0x3A6C
Faulting application start time: 0x1DD4770C86CAF86
Faulting application path: C:\Program Files\Nextcloud\nextcloud.exe
Faulting module path: C:\Program Files\Nextcloud\nextcloud_csync.dll
Report Id: 2fad8876-759b-4ee7-8009-afdef81344b6
Faulting package full name:
Faulting package-relative application ID: "

[CHerSun]

Wrong D3Dcompiler_47.dll gets bundled together with NextCloud for quite some time now. Deleting/renaming it from NextCloud installation folder helps, at least for me. Got the same error - trying to open GUI just crashes full NextCloud instead, including tray icon.