Update Adobe Acrobat Reader

Can't update.

My anti virus program warns me to update AAR.

However, when I try to update it, I only see a 'Failed for Unknown Reasons' error message.

When I open AAR and check for updates, and try and install them, I only receive a message saying I must close AAR.

If I close AAR I can't, of course, check for updates.

I have checked that my Adobe registration is current and correct.

My system run on Windows 10.

Cheers