Powerpoint will not scale properly on second monitor

I found the fix.  There is a typo in the powerpoint.exe.manifest file.  Find the file and copy it to your desktop.  Edit the files with notepad and edit this line:

<dpiAware>True/PM</dpiAware>

to

<dpiAware>True</dpiAware>

Save the file on your desktop, make sure the file extension didn't get changed to '.TXT'. 

Make sure PowerPoint is closed and copy the file back to where you found it and approve the security needed to update it.

Hopefully Microsoft will fix the manifest file in future updates.

This is absolutely ridiculous.

Having just spent over £2,500 on a Surface book. My role and our business involves creating PowerPoint presentations, to be told there is no workaround apart from laptops much cheaper working perfectly with a second monitor is pathetic. Microsoft, what were they thinking? We need a resolution now!

Powerpoint Developers: Read about what your Windows Developer colleages at Microsoft intended with enabling Windows 8.1/10 to have different High-DPI settings on different monitors and JUST FIX YOUR BUGS! 

MICROSOFT - Please engage with your users, supporters and influencers!

I hear your pain and coukdnt agree more. My fix is to only use my external monitor which means I 'm denied the convenience of two screens. Incredible stuff up.

Just have just spent £1300 on a Microsoft rather than Apple laptop as self-employed independent consultant. Really pleased except for Powerpoint - which is a joke on an external monitor. I spend my life in Powerpoint and like to do most of my work on a larger screen when not on the road. This is a real deal breaker for me. I am going to test if Apple native Office has similar issues and break decades of Windows use to switch to Mac. Appalled that this has been known for years, has been resolved in Word/Excel/Outlook, yet everyone here is trying to code workarounds. WHAT ARE YOU DOING MICROSOFT????????

I have to echo Zeh Muller's well crafted statement:

The ONLY solution to this problem would be: Powerpoint Developers: Read about what your Windows Developer colleages at Microsoft intended with enabling Windows 8.1/10 to have different High-DPI settings on different monitors and JUST FIX YOUR BUGS! You may want to ask your Word and Excel Developer colleagues how they were able to just make their programs work. AND You may also ask your Surface Product Manager colleagues what they think about shipping a software which shows its bugs best if run on one of the high-end high-dpi and high-priced flagship Surface devices.

MICROSOFT - Please engage with your users, supporters and influencers!

Thanks for the explanation as to why the settings I'd changed to make PPT work suddenly reverted to the old problem.

I agree it's extraordinary that MS can't make their own software work on their own hardware platform.

The only work-around I've found its to start up with the second screen only enabled, open PPT, then I enable the Surface screen and open Outlook or whatever in that screen. But even that can get confused and revert to the old problem without rhyme or reason.

We await MS  to solve the problem.