How do I change the default program to open PDFs?

[Crazy_Izzy]

I would like Adobe Acrobat 9 to open my PDFs as a default program. When I followed the Adobe prompt to update (pop up), it changed the default to Adobe Reader 10.

[pwillener]

Most likely the update to Reader 10 uninstalled Reader 9.  You cannot normally have multiple Reader versions installed on the same system.

[try67]

He's talking about Acrobat 9, not Reader.

Those two versions can co-exist, but it's not a recommended situation. Only Acrobat X and Reader X can officially co-exist without issues.

With any other combination, you might run into problems, like the one described above.

[Nikhil.Gupta · Accepted solution]

Hi,

In Adobe Reader x, go to edit-preferences->General. Click "Select default  PDF handler" and select Acrobat 9 from there.

[Crazy_Izzy]

That worked fine, thank you.