Summary
- Power Pages version 9.8.8.5 will be automatically applied to websites marked for early upgrade.
- The update includes an updated website host, with no solution update required.
- Microsoft states the release contains customer-reported fixes plus performance and security updates.
- During the upgrade, the Portal Management page in the Power Platform admin center will be briefly read-only and the affected website(s) will restart once.
- No admin action is required.
Primary Service: Power Platform
Admin Impact: Low
User Impact: Low
Release Start: 20 Aug 2026
Release End: 20 Aug 2026
Services: Power Platform
Category: Stay informed
History
8/14/2026 Item Added to Message Center
8/17/2026 Standard start/end: 20th August 2026 (previously 16th August 2026).
Microsoft Message
Maintenance window start: August 20, 2026, at 2:00 AM UTC
Maintenance window end: August 20, 2026, at 11:00 AM UTC
This is the early upgrade deployment of Power Pages version 9.8.8.5 for Microsoft Dynamics 365. This deployment includes an updated website host and no solution update. This release contains fixes for issues reported by customers as well as performance and security updates. Release notes for this release can be viewed here.
How does this affect me?
This release will be applied to your Power Pages website(s) marked for early upgrade. During the update, the Portal Management page in the Power Platform admin center will be placed in a read-only state for a short period of time. Additionally, your Power Pages website(s) will be restarted once during this upgrade.
What action do I need to take?
Upgrade of the website(s) to the newest version will be applied automatically. No action is required.
Learn more about the Power Pages upgrade process.