Permissions changed to "Deny All" on Nextcloud sync folder after a reboot

AdamAnon · January 1, 2025, 3:50pm

I’m getting tired of this. Starting with Windows client version 3.14.2, maybe earlier, 3.13.0 I think was the last one that didn’t have this problem, randomly after a reboot permissions are changed to “Deny All” on Nextcloud sync folder so the client fails to sync. Permissions need to be fixed by hand. I have 6 Windows 11 PCs, it happens randomly on all of them, at least once a day. Always after a reboot, not sure if it happens after wakeup too (I turn them off for the night). I’m currently on client 3.15.0. I also have, well had for a month, a Fedora 41 KDE PC and this never happened with the Linux client, only on Windows.

This only happens to the Nextcloud sync folder (inCloud in the screenshots, not related to the inCloud company, just a name for my instance), I have no other permission issues with anything else, it’s clearly Nextcloud related.

Any ideas? Thank you.

Windows 11 Pro 23H2
Nextcloud Desktop 3.15.0
Nextcloud Hub 8 29.0.3
Ubuntu 24.04.1

tflidd · January 3, 2025, 11:28am

Do you use other sync solutions to sync the same folder?

Which “security” products do you use, do they restrict something because they think Nextcloud client is bad?

I found this issue on the bug tracker:

github.com/nextcloud/desktop

[Bug]: Windows local client access denied error when syncing - trying to remove empty folders locally using virtual nextcloud files

opened 12:37PM - 11 Sep 24 UTC

StatusPro-ziegelt

0. Needs triage

### ⚠️ Before submitting, please verify the following: ⚠️ - [X] This is a **bug…**, not a question or a configuration issue. - [X] This issue is **not** already reported on Github (I've searched it). - [X] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions. - [X] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/) ### Bug description Someone deletes a folder on the nextcloud server (or by sync with a client). Now all other clients try to sync it downwards - trying to remove those folders everywhere. But the syncing client shows an error with access denied for this folder. ![image](https://github.com/user-attachments/assets/73bbafaf-5b09-4b1f-b0e5-d7f0fbe886ae) The folder is located inside the users home folder and has all permissions set correctly - as windows reports this. Permissions are set to inherit from base folders - and inheritance shows as beeing correct and not broken. ![image](https://github.com/user-attachments/assets/63b664f4-2d12-4083-ae91-c288ffe35127) Trying to delete the folder manually fails, because extended rights are needed (in the users home folder ?) ![image](https://github.com/user-attachments/assets/95ee6db0-32e6-4ba4-8bc9-0d8537fb0799) Now resetting the Owner and the folder permissions from ground up for the whole nextcloud folder, allows to delete files manually with windows tools - but does not fix the client sync problem. ![image](https://github.com/user-attachments/assets/da7692ae-fb2f-461d-8b5a-a273c1596478) We are using virtual files - maybe there is a problem with multiple cascading levels of empty - non synced folder recursively ? This problem reoccurs again and again - even on "fixed" computers after resetting the permission structure. So its no permanent fix. ### Steps to reproduce Please follow the description as above ### Expected behavior If someone deletes a folder on client1, the folder should be removed on all other synced clients automatically without error messages, .... ### Which files are affected by this bug empty folders ### Operating system Windows ### Which version of the operating system you are running. Windows 10 - latest / Windows 11 - latest ### Package Official Windows MSI ### Nextcloud Server version 29.0.6 ### Nextcloud Desktop Client version 3.13.3 ### 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 - [X] LDAP/ Active Directory - [ ] SSO - SAML - [ ] Other ### Nextcloud Server logs _No response_ ### Additional info _No response_

AdamAnon · January 3, 2025, 11:56am

Nope, only Nextcloud, no other sync solutions. No third party antivirus either, just Windows 11 stock Defender. Yes, Defender was the first thing that I though of, but that doesn’t seem to be it, as it normally pops up notifications when it blocks something and there were no warning or error notifications from Defender on any of these machines for months, and I’d rather not exclude 800GB of files from security scans. Yes, this is exactly the same issue as the one you linked to. I added to the report on Github, thanks for the link!

No idea what’s going on, but I bet it’s a bug in the client as it started some months ago immediately after upgrading the clients on all machines.

So I rolled back to an older client version and it stop happening, didn’t happen for months. Then I updated few weeks ago because they added dark mode and I’m a sucker for dark mode. Now I regret it but I’m not sure if it’s a good idea to downgrade to much older client at this point.

Thermo · January 14, 2025, 5:29am

Same issue here - it’s driving me batty.

AdamAnon - which version of client were you running that did not do this? I will likely downgrade back until this gets solved.

AdamAnon · January 14, 2025, 9:33am

I have a note that says 3.13.0 was the last version that wasn’t doing this.

However, I’ve updated my clients last week to 3.15.3 (I was running 3.15.0 at the time I started this thread) and it hasn’t happened since. It used to happen every single day. Crossing fingers.

Thermo · January 14, 2025, 1:22pm

I am running 3.15.0 as well - thanks for the info, I will bump up to 3.15.3 and hopefully it goes away.