Acrobat Chrome extension 26.7.2.0 fails to open authenticated OpenText PDFs
We are experiencing a regression with Adobe Acrobat Chrome extension version 26.7.2.0.
Environment:
- Adobe Acrobat Chrome extension: 26.7.2.0
- Google Chrome: 150.0.7871.129
- Source application: Power BI Web
- PDF repository: OpenText Cloud
- OpenText URL format:
https://otac.sg59.opentext.cloud/archive?get...
Expected result:
Selecting a PDF link in Power BI should open the document in the Adobe Acrobat Chrome extension viewer.
Actual result:
The document begins loading in the Adobe viewer, but Acrobat then abandons the operation and falls back to Chrome’s native PDF viewer.
Acrobat telemetry captured during the failure reports:
DCBrowserExt:Viewer:Error:FallbackToNative:FileDownload:Failed
The same event is classified as:
non_mime
Control test:
A direct public PDF URL ending in .pdf opens correctly in the Adobe extension:https://web.mit.edu/dvp/Public/butters-lululu.pdf
Troubleshooting already completed:
- Confirmed “Online PDFs” is enabled in Acrobat preferences
- Confirmed Adobe has site access on all sites
- Confirmed Acrobat is the Windows default PDF application
- Allowed third-party cookies for
[*.]opentext.cloud - Cleared all cookies and browser data
- Tested with a new Chrome profile
- Confirmed the extension works with ordinary direct PDF links
- Reproduced the issue on multiple computers
One computer initially opened the same OpenText documents correctly. It began failing immediately after its Adobe extension updated to 26.7.2.0. This strongly indicates a regression in version 26.7.2.0, or in remote configuration deployed with that version, involving authenticated or extensionless PDF endpoints.
Current workaround:
Chrome downloads PDFs and user opens the downloaded file in desktop Acrobat. Chrome’s native PDF viewer also displays the document successfully.
Need to confirm:
- Whether this is a known issue in extension version 26.7.2.0.
- Whether a fix or remote kill-switch is planned.
- Whether there is a supported temporary rollback or enterprise mitigation.
- What additional sanitized diagnostic information is required.
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