Hi.
I’d appreciate any advice regarding the issue described below.
Steps to reproduce the problem:
- Access iCloud.com from Safari on my Mac mini using my account.
- Create and save a Numbers spreadsheet.
- Access iCloud.com from Safari on an iPhone SE (2nd generation) using the same Apple account.
- Tap the file icon of the saved Numbers spreadsheet.
- Safari navigates to “about:blank” and displays an error message.
- Error message:
**This spreadsheet is unavailable. The owner stopped sharing, or you do not have permission to open this spreadsheet. **
I used to be able to view these files, but now none of the spreadsheets will open.
Environment: Intel Mac mini (2018) macOS Sequoia 15.7.7 Safari 26.3 iPhone SE (2020) iOS 26.5 Beta 4
What I’ve tried:
- Suspecting a Safari issue, I installed Google Chrome on the iPhone and tried accessing iCloud.com, but encountered the same error.
- Installed the Numbers app on the iPhone and accessed the files on iCloud — they open successfully.
- Created and saved a new file using the Numbers app on the iPhone, then tried accessing it via Safari and Chrome through iCloud — the same error occurs.
Additional information: Other files on iCloud (such as Notes) can be opened across devices without any issues.
Installing the Numbers app on the iPhone allows me to view the files, but since I only need to view them (not edit or create new ones), I’d prefer not to install it if possible. This might be related to participating in the beta program (I’ve already submitted a report via Feedback Assistant). Would downgrading be advisable?
