Error code

Google Play DF-DLA-15

GOOGLE PLAYDF-DLA-15
Android Error Code· An error code shown by Android or the Google Play Store.

What it means

Download failed — the Play Store cannot acquire the download lock.

How to fix it

  1. Clear the cache and data for Google Play Store.
  2. Clear the cache and data for Download Manager (Settings > Apps > Download Manager).
  3. Restart the device and retry.

Not affiliated with Google Play. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.