MWPRO IMPACT SCORE
OPERATIONAL IMPACT
65
0
25
50
75
100
HIGH IMPACT • REVIEW RECOMMENDED
Recommended Action:
Review the update and plan any required actions before rollout.
Review the update and plan any required actions before rollout.
What is MWPro Impact Score?
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Primary Audience
Power Platform AdminsMicrosoft 365 AdminsSharePoint AdminsDevelopersIT ManagersService Owners
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
Existing flows and agents that depend on thumbnail URLs will fail after the change, requiring proactive updates before September 1, 2026. Admin impact is high due to the need for flow reviews, testing, and reconfiguration. Effort involves identifying all dependent flows and implementing the new Get file thumbnail action. User impact is moderate because most disruption is through broken automation rather than direct UI changes, but it may affect business processes if not addressed.
78
Admin Impact
30
User Impact
70
Urgency
65
Effort
WHAT YOU NEED TO KNOW
AT A GLANCE
SharePoint flows using thumbnail URLs need updating. From September, the old URLs will no longer work and may break dependent actions.
END USERS
No major end-user change expected.
IT ADMINS
Update any flows or agents using thumbnail URL dynamic content to the new Get file thumbnail action.
ROLLOUT TIMELINE
Upcoming:
September 2026
September 2026
📢 Official Microsoft Message Center Announcement
Power Platform – Information about SharePoint file thumbnail changes
Message ID: MC1454816
Beginning September 1, 2026, SharePoint triggers and actions that are currently returning a thumbnail URL are being updated. The new Get file thumbnail action will return an image instead of a URL, and existing flows that rely on the current thumbnail URL will otherwise return an invalid URL that may cause subsequent flow actions to fail.
How does this affect me?
Existing flows that use SharePoint triggers or actions such as Get items or Get file items and rely on the thumbnail URL dynamic content should be transitioned to use the new Get file thumbnail action. If flows and agents that rely on a returned URL are not updated to use the new Get file thumbnail action, subsequent actions that depend on that URL may fail.
What action do I need to take?
Update any existing flows and agents that use the thumbnail URL dynamic content to use the new Get file thumbnail action.
Source: Microsoft Message Center • Analysed by MWPro
