I’m running Nextcloud AIO, version Hub 26 Winter (33.0.6) on Debian 13.
I discovered recently - I assume it’s a recent update that did it - that I can no longer open certain PDF’s (which, to be clear, I can still upload just fine).
A 99.7MB PDF opens, and a 101.1MB PDF doesn’t.
I’m guessing that a 100MB cutoff has been introduced.
Yep, you found the point there. That message comes from ONLYOFFICE, not Nextcloud’s upload limit. Its default maxDownloadBytes is 104857600 bytes, which matches your 99.7/101.1 MB test.
Try Open with, then pick the built-in PDF Viewer. If that works, the file and upload are fine. Only ONLYOFFICE is hitting the limit.
AIO doesn’t seem to expose this in the UI. I wouldn’t edit the managed container since an update may wipe it. If you need larger PDFs in ONLYOFFICE, I’d ask the AIO project for a supported override.
View works, so that is a step forward - but on closing the PDF, I see that it has been opened a second time, one of which is in Office, I believe - with the error message.