[Bug]: Crash in 3.15.0

[zen010101]

⚠️ 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've searched 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

I upgraded from 3.13.4 desktop to 3.15.0. The reason I didn't upgrade before was that every upgrade would cause unexpected crashes during file synchronization of Nextcloud Desktop running on two Windows 11 machines, without any prompts. I thought this issue should have been resolved after so many version updates, but after upgrading yesterday, the crash problem still occurred.

I am confused now, I can no longer find version 3.13.4 on the internet, but I can find versions 3.13.3 and 3.14.0. It seems like this version has been skipped.

Steps to reproduce

As long as the synchronization starts, the program crashes

Expected behavior

work normally

Which files are affected by this bug

I don't know

Operating system

Windows

Which version of the operating system you are running.

Windows 11

Package

Official Windows MSI

Nextcloud Server version

29.0.6

Nextcloud Desktop Client version

3.15.0

Is this bug present after an update or on a fresh install?

Fresh desktop client install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

Are you using an external user-backend?

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

Nextcloud Server logs

Additional info

you can download the Desktop Client Log from here: https://nextcloud.cheming.top:4443/s/jZ4eGnJmkXszwgB

[ywtoly]

Me too!

[fleuus]

++1

[archmagepi]

Me too!

[hiikii]

Yes I can confirm the issue, I'm still on 3.13.4 as the crash has been there since 3.14. If you need an older version, you should be able to find it in the AppData folder.

[Traveller23]

same here.

[camilasan]

Is it on a VmWare?

[hiikii]

@camilasan Hello, I would like to say that at least I am not.

I have another Nextcloud desktop installed in a PVE VM (Windows 11) with almost no other 3rd party software installed and am experiencing similar issues.

In my experience, 3.13.x always worked fine, the problem started with 3.14.

[fleuus]

Is it on a VmWare?

No, it is not used on VMware. I think it might be related to the fact that the server runs Linux, the client is Windows, or the filenames and content contain Chinese characters.

[yangyunzhao]

It was crashing with version 3.14.3, and after updating to 3.15, it stabilized for a while. Now it's starting to crash frequently again. It's urgent.

[Traveller23]

Is it on a VmWare?

No, it is not used on VMware. I think it might be related to the fact that the server runs Linux, the client is Windows, or the filenames and content contain Chinese characters.

My environment is the same as yours. I rolled back from 3.15.0 to 3.14.3 yesterday, and so far so good.

[yangyunzhao]

Is it on a VmWare?

No, it is not used on VMware. I think it might be related to the fact that the server runs Linux, the client is Windows, or the filenames and content contain Chinese characters.

My environment is the same as yours. I rolled back from 3.15.0 to 3.14.3 yesterday, and so far so good.

Yes, my server is Ubuntu, and the client is Windows 10. In my materials, both directory names and file names contain a large number of Chinese characters. I have two clients, one of which is a Windows 10 with a Chinese system, and it crashes frequently. The other one is a Windows 10 with an English system, and no crashes have been observed so far. I used version 3.12.4, and there were no crashes.

[PiKeyAr]

I've been experiencing the same issue since version 3.14 on two machines, but the third machine which syncs to the same exact servers is fine. The crash happens when synchronization starts, there is no error message and the program just quits silently. Version 3.13.4 worked without crashes on all machines. The OS on the crashing machine is Windows 10 22H2.

[zen010101]

Is it on a VmWare?

No. It happened on the Windows 11 Home Edition 23H2 native.

[zen010101]

In my experience, 3.13.x always worked fine, the problem started with 3.14.

YES.

[m-schmailzl]

I experienced the same issue on server 29.0.10 and client 3.15.0.
I fixed it temporarily by disabling the download and upload limits in the desktop client's network settings.
Maybe this information will help someone.

[jjasoncool]

I've been experiencing the same issue since version 3.14 on two machines, but the third machine which syncs to the same exact servers is fine. The crash happens when synchronization starts, there is no error message and the program just quits silently. Version 3.13.4 worked without crashes on all machines. The OS on the crashing machine is Windows 10 22H2.

Really, after version 3.13.4 the app become unstable on all my machines.

[PiKeyAr]

Updated to 3.15.1. The crash is still happening.
I found out that my Windows installation had crash dialogs disabled by default so I enabled them by setting DontShowUI to 0 in Windows Error Reporting registry key like this

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting]
"DontShowUI"=dword:00000000

After that I got the crash dialog to display and opened Visual Studio to debug. I was able to gather the following:

>	ucrtbase.dll!abort()	Unknown
ucrtbase.dll!terminate()	Unknown
nextcloud.exe!00007ff67823628a()	Unknown
KernelBase.dll!UnhandledExceptionFilter()	Unknown
ntdll.dll!RtlUserThreadStart$filt$0()	Unknown
ntdll.dll!__C_specific_handler()	Unknown
ntdll.dll!RtlpExecuteHandlerForException()	Unknown
ntdll.dll!RtlDispatchException()	Unknown
ntdll.dll!RtlRaiseException()	Unknown
KernelBase.dll!RaiseException()	Unknown
vcruntime140.dll!_CxxThrowException(void * pExceptionObject, const _s__ThrowInfo * pThrowInfo) Line 82	C++
nextcloud_csync.dll!00007ff8213c9f08()	Unknown
nextcloud_csync.dll!00007ff8213c83c6()	Unknown
nextcloud_csync.dll!00007ff8213ca297()	Unknown
nextcloudsync.dll!00007fffe647e47a()	Unknown
nextcloudsync.dll!00007fffe6485c6e()	Unknown
nextcloudsync.dll!00007fffe6485603()	Unknown
nextcloudsync.dll!00007fffe6484b18()	Unknown
Qt6Core.dll!00007fffe484511d()	Unknown
Qt6Core.dll!00007fffe4845b48()	Unknown
nextcloudsync.dll!00007fffe646f719()	Unknown
nextcloudsync.dll!00007fffe646fbab()	Unknown
nextcloudsync.dll!00007fffe646fbab()	Unknown
nextcloudsync.dll!00007fffe646fbab()	Unknown
nextcloudsync.dll!00007fffe646fbab()	Unknown
nextcloudsync.dll!00007fffe646f76f()	Unknown
nextcloudsync.dll!00007fffe646f4d9()	Unknown
Qt6Core.dll!00007fffe4879511()	Unknown
Qt6Core.dll!00007fffe487c364()	Unknown
Qt6Core.dll!00007fffe4894fe4()	Unknown
Qt6Core.dll!00007fffe4883436()	Unknown
Qt6Widgets.dll!00007fffe57727fe()	Unknown
Qt6Widgets.dll!00007fffe577198d()	Unknown
Qt6Core.dll!00007fffe483936c()	Unknown
Qt6Core.dll!00007fffe49c5818()	Unknown
Qt6Core.dll!00007fffe49c282a()	Unknown
Qt6Widgets.dll!00007fffe57727fe()	Unknown
Qt6Widgets.dll!00007fffe577198d()	Unknown
Qt6Core.dll!00007fffe483936c()	Unknown
Qt6Core.dll!00007fffe483c12e()	Unknown
Qt6Gui.dll!00007fffe540706f()	Unknown
Qt6Core.dll!00007fffe49c2e29()	Unknown
Qt6Gui.dll!00007fffe5406fe9()	Unknown
Qt6Core.dll!00007fffe4840a64()	Unknown
Qt6Core.dll!00007fffe4836cdd()	Unknown
nextcloud.exe!00007ff67809f460()	Unknown
nextcloud.exe!00007ff678236670()	Unknown
nextcloud.exe!00007ff6782356e2()	Unknown
kernel32.dll!00007ff85d7c7374()	Unknown
ntdll.dll!RtlUserThreadStart()	Unknown

[karlisi]

The same as here #7258
Here you can find all Nextcloud client for Windows releases
https://download.nextcloud.com/desktop/releases/Windows/