How do I fix AccountSSD Disk Space Bug in macOS Tahoe 26.2?

Three approaches in order of safety: (1) Purge the AccountSSD Logs; (2) Force a FileVault Status Check. Full Terminal commands and System Settings paths are inside each section.

Is this fix confirmed for macOS Tahoe 26.2?

Yes — verified on macOS Tahoe 26.2. Article is updated when Apple ships a point release that changes the symptom or fix.

How to Fix AccountSSD Disk Space Bug in macOS Tahoe 26.2

Symptom: You receive a "Disk Almost Full" warning, and system analysis shows "AccountSSD" or "Other Users" taking up 50GB+ of space on macOS Tahoe.

TL;DR fix

Start with Fix 1: Purge the AccountSSD Logs. If the issue persists after that, try Fix 2: Force a FileVault Status Check. Full Terminal commands and step-by-step instructions are in each section below.

Why this happens

A bug in Tahoe's new account encryption layer causes the accountssd process to generate massive temporary log files in a hidden directory if FileVault is enabled but hasn't finished a full scrub.

Recommended Troubleshooting Tool

Before proceeding with manual fixes, we recommend using CleanMyMac X. Quickly identify high CPU apps and optimize system memory with one click.

Fix 1: Purge the AccountSSD Logs

Open Terminal.
Run the following command (requires password):

sudo rm -rf /var/db/accountssd/*.log

Restart your Mac. You should see the space return immediately.

Fix 2: Force a FileVault Status Check

In Terminal, run:

fdesetup status

If it says "Encryption in progress," leave your Mac plugged into power overnight to finish, which will stop the log generation.

Recommended Tool: DaisyDisk

To find exactly where these "Hidden Space" bugs are hiding, DaisyDisk is the best tool for macOS. It allows you to scan as Administrator and see exactly what accountssd is doing.

Tested and documented by the MacDebug team — about MacDebug. See also Fix macOS "Disk Not Ejected Properly", Fix macOS "Disk Not Ejected Properly", or browse all guides on macdebug.