How to set Adobe as Default PDF Viewer in Internet Explorer instead of PowerPDF

Question:

How to set Adobe as Default PDF Viewer in Internet Explorer instead of PowerPDF

Answer:

Set from Options in PowerPDF

Open PowerPDF > File > Options > General > Integrations > select Disable - View PDF documents in Internet Explorer

or

Run in CMD window with Administrator

"C:\Program Files (x86)\Nuance\Power PDF 20\bin\Defaultviewer.exe" /OpenWithExe

or "C:\Program Files (x86)\Nuance\Power PDF\bin\Defaultviewer.exe" /OpenWithExe

or

Registry change

HKEY_CLASSES_ROOT\MIME\Database\Content Type\application/pdf

The CLSID listed to reference Adobe is HKEY_CLASSES_ROOT\MIME\Database\Content Type\vnd.adobe.acrobat-security-settings

You can copy the CLSID from this key and paste into the CLSID under HKEY_CLASSES_ROOT\MIME\Database\Content Type\application/pdf