If you've ever browsed a busy folder in Umbraco Cloud's Kudu console - a logs directory, or a media folder with thousands of files - you've probably seen this:
There are 1722 items in this directory, but maxViewItems is set to 299. You can increase maxViewItems by setting it to a larger value in localStorage.
Helpful in that it tells you the fix, unhelpful in that I forget how to do it every single time. So here's the note-to-self post.
The fix
Kudu's file browser caps how many items it'll render in one go, and that cap lives in your browser's localStorage - not on the server. To raise it, open your browser's DevTools (F12) on the Kudu page, switch to the Console tab, and run:
javascriptlocalStorage.setItem('maxViewItems', '5000');Refresh the page and you should see the full listing. Pick whatever ceiling makes sense - 5000 is usually plenty, but you can go higher for genuinely huge directories.
It's per-browser and per-domain, so you'll need to set it again on each Umbraco Cloud environment (Live, Staging, Development) the first time you hit the limit there. Umbraco's own Power Tools docs note that the limit can revert to 299 on refresh - localStorage should persist by spec, so I'd expect it to stick, but if you find yourself setting it repeatedly that's why.
Why the limit exists
The Kudu UI builds the directory listing in the DOM, and rendering thousands of rows at once will lock up the browser tab. The 299 default is a sensible guard, just an annoying one when you actually need to see everything.