How to Retrieve Microsoft 365 Audit Logs from One Year Ago
Question details
The user needs to retrieve Microsoft 365 audit logs older than 180 days, specifically from a year ago, but is unable to see them in standard searches.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Investigating past authentication, access, or administrative activities for compliance or security audits.
- Observed behavior
- Audit log searches only display data for the last 180 days, making older records appear unavailable or deleted.
Ensure you have global administrator or compliance administrator privileges in the Microsoft Purview compliance portal before attempting to search or configure audit logs.
Verify Audit Premium Licensing and Retention Policies
Check if your organization has the proper licensing and configured retention policies to keep audit logs for up to one year.
By default, Microsoft 365 retains audit logs for 180 days for most standard licenses. To retrieve logs from a year ago, your organization must have had an Audit (Premium) license active at the time the events occurred.
Additionally, a custom audit retention policy must have been configured to keep those specific records for up to 1 year or 10 years. If the logs exceeded the default 180-day period without a longer retention policy in place, they are permanently deleted and cannot be recovered.
Sign in to the Microsoft Purview compliance portal using your global or compliance administrator credentials.
On the left navigation pane, scroll down to the 'Solutions' section and click on 'Audit'.
Click on the 'Audit retention policies' tab to see if an active policy was set up previously to retain the required activity logs for 1 year.
Go to the 'Search' tab, set your date and time range for the past year, select the activities, and click 'Search'. If the records were retained by your policy, they will populate in the results.
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Frequently Asked Questions
Can I recover deleted Microsoft 365 audit logs after 180 days?
No. Once an audit log exceeds its retention period and is deleted by the system, it is permanently removed and cannot be recovered by administrators or Microsoft Support.
How do I export my audit logs for long-term storage?
You can run an audit log search in the Microsoft Purview portal and click the 'Export' button to download the results as a CSV file. This allows you to store the records securely in your own environment for long-term compliance.
Why are my audit logs only showing the last 180 days?
This is the default retention period for Microsoft 365 Audit (Standard). To keep logs longer, you need an Audit (Premium) license and must actively configure a specific audit log retention policy before the 180 days expire.
Are third-party tools able to retrieve logs older than a year?
Third-party SIEM (Security Information and Event Management) tools can only store logs long-term if they were configured to actively ingest and save the logs before the Microsoft 365 retention period expired. They cannot retroactively pull deleted logs from Microsoft's servers.
