Adobe Reader 9.0 not opening in browser

When deploying Adobe Reader 9.o (and higher) via Group Policy and removing Adobe Acrobat Reader 8.0 (and higher) using Group Policy users may experience issues when attempting to open a PDF object within their browser.

Delete the following keys:

HKCU (HKEY_CURRENT_USER)

–>Software
—–>Adobe
——–>Acrobat Reader

Remove “8.0”
Restart