I encountered the same problem, and if I remember, I just had to open these files in Photoshop and saved them again.
It really doesn't sound like an InDesign issue, but in any case, perhaps if you post more details about your system, (OS, versions of software involved, etc.), and methods, (content specifics, export settings, etc.), someone might spot something amiss and offer guidance.
Thanks - I'm incredibly new to ID so it could easily be a lot of things...
I have a Mac OS X - 10.9.4. I'm trying to insert image into PowerPoint, which is 2008 for Mac, version 12.3.6. Tested in Word as well - same version, same results.
My initial ID file was created as a document and has twenty pages. Most pages have a photoshopped image as background with additional layers of texts and images on top.
Export settings to PNG - exporting all pages, high quality, 150 ppi resolution, RGB color space, with transparent background and anti-alias checked. I've played around with those settings and get the same results so I don't think it's related.
Just tried exporting to PNG with other ID created files and the same thing happens so it's not just the one file.
Did you try what I have suggested? Once you have exported your indd files to png, open the png in Photoshop and resave it.
Yes, that does work! Thanks for the tip. I did find that the PNG files exported from ID don't have the color profile embedded. I think this is the problem, but don't see an option to include while exporting.
That shouldn't be the cause.
I cannot see the problem on a Mac OSX system with OSX 10.7.5 and PowerPoint 2011 v14.4.3.
Could it be, that you have to close the creator app (InDesign CC-2014) before inserting the PNG in PowerPoint?
(So some basic settings with OSX 10.9 and file handling are into play?)
Nope, no such luck. Thanks for the suggestion though!