U mnie zadziałało to:
When I got this problem, I did this:
- Deleted my Google account from the device.
- Force stopped Google Play, cleared its cache and data (in Settings > Installed apps).
- Force stopped Google services framework, cleared its cache and data.
- Rebooted device.
- Added Google account back in settings.
- Opened Google Play app and waited several minutes for it to install necessary Google updates (it doesn't show any progress, just wait 3-5 minutes patiently).
- Then tried to install some app, and it worked. No more DF-DLA-15 error.
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