[Bug]: Main window will not open on Windows

[timinator2020]

⚠️ 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

After updating the client to 3.14, the main dialog no longer shows when clicking on the icon in the system tray. Also, after editing settings the whole app will occasionally crash and need to be restarted.

Steps to reproduce

1. Click on the Nextcloud icon in the Windows system tray
2. That's it. The main window should open, but doesn't.
   ...

Expected behavior

When clicking on the Nextcloud icon in the Windows system tray the main window should open.
...

Which files are affected by this bug

all files, or maybe none?

Operating system

Windows

Which version of the operating system you are running.

Windows 11 Home 23H2

Package

Official Windows MSI

Nextcloud Server version

29.0.6

Nextcloud Desktop Client version

3.14.0

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

Updated to a major version (ex. 3.3.6 to 3.4.0)

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

No response

Additional info

There seems to be an issue that has the same symptoms here, but that is for Linux and is already closed. My issue is with the Windows client and my Nextcloud directory seems to have Qt6 libraries already, so I don't think it's the same issue (although it may have the same root cause).

I have had to go back to 3.13.4 since 3.14 would occasionally crash and I couldn't tell if the client was syncing or not. If needed, I can reinstall 3.14 and gather logs.

[webneo82]

Same here on 4 different Windows 11 computers (version 23H2) since upgrading Nextcloud client to version 3.14.0.

[petiard]

Same here on Windows 11 Home version 23H2 after upgrading Nextcloud client to version 3.14.0.

[aat058]

Even worse that directories and files which were not touched since years are now complaining about sync issues. Sync info only available in settings window.

[mgallien]

we are working on this already
we will merge fixes for the next release as soon as we can
sorry

[mgallien]

people please stay on topic
I would hate to have to lock the conversation
this is only about the main dialog not showing up on start on windows

[mgallien]

Troubleshooting the same issue on several computers now that are running Windows 11 23H2.

After Nextcloud clients auto-updated to v3.14 it just starts and than just closes by itself in 5-10 seconds...

Server version 29.0.5.

this would be a different issue
this issue is about the desktop client running fine but the UI not showing up

[micas83]

Same issue here on 3 PCs (win10 & win11), reverted back to 3.13

[nspader]

Same here with 2 PCS

[pierremorallet]

Same issue on Windows 10 Entreprise Version 22H2 Build 19045.338 with Nextcloud desktop client v3.14.0. I have some sync conflict to resolve and I don't know how to do this without the main windows.
Note that I tried also to access to the main windows by right clicking on the icon, then selection "open the main windows" in the menu. Same issue.
Workaround : revert back to 3.13.4 found onthis page).