Said It Here

How do I find a specific change in an audit log?

Detailed system audit logs contain so much information that tracking down a specific change or finding out if another employee account accessed a mailbox or calendar becomes difficult. This sheer volume of data makes it hard to troubleshoot unexpected edits when multiple people are involved.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    Locking books with a password each month
  2. 2
    Using Exchange Online PowerShell with Search-UnifiedAuditLog and specific parameters instead of the admin center UI

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/sysadmin1 person · September 2026

“How can I track down if any other employee accounts have accessed that mailbox/calendar in the last 180 days?”source ↗

_NegativeOptimist_ · r/sysadmin · 4 upvotes
r/QuickBooks1 person · September 2026

“Yes, with so much detailed information it can definitely be difficult to find the specific change you are looking for.”source ↗

ahad3107a · r/QuickBooks · 1 upvotes

Where this came up

People with this problem also raised