Folder download fails when Windows System clock is 1h behind

[jnweiger]

Initial Checklist

• I understand this is a bug report and questions should be posted in the Community Discussions
• I searched issues and couldn’t find anything (or linked relevant results below)

Bug Description

oc-6.2.0 started at hetzner cloud via docker compose according to https://docs.opencloud.eu/docs/admin/getting-started/container/docker-compose/docker-compose-base/
Browser: Microsoft Edge, Version 148.0.3967.70 (Official build) at Windows 11 Home, 25H2, Build 26200.8457

Upload a folder with a few files.
Click on the folder, 3 dots menu, select download.

A file archive.txt is shown in the downloads list.

this is the file content:
https://cloud.oc62a.jwqa.de/archiver?id=5c4a3f33-544f-448c-af20-d19eea0d606e%24fc23ccfd-716e-449a-b2c1-74a2b56db53d%213d449e27-cf27-421e-9ecd-a32adaf686e3&OC-Credential=testy&OC-Date=2026-05-19T14%3A05%3A10.041Z&OC-Expires=1200&OC-Verb=GET&OC-Algo=PBKDF2%2F10000-SHA512&OC-Signature=fc92a84a4064aa5b1ec310bea956f4df6758088b002003ad0ed7eaf8808a092e

Reproduction Steps

This happens on windows only. Ubuntu and Suse can download folders.

Expected Outcome

download should download.
(Or at least the user should see a hint, that the clock of the local laptop is off -- all other functions work when the clock is off. only download seems affected.)

Actual Outcome

Nothing is downloaded for a folder download.
Simple file downloads work just fine, anyhow.

[jnweiger]

The clock of windows was 1 hour in the past when this happened.
A while later, when the clock was correct, and the user was logged out and logged in again. The download works.

On linux, the download also fails, when the local system clock is 1h behind:
A requester appears, asking for username and password.
Even with the correct credentials, the requester just re-appears.