I got this error and I was not able to save images to my device from the web nor could I install apps simply because it looked like the downloads would never start .
power cycled device after each new remedy I tried .
I cleared my cache and followed other similar instructions I found on the net . didn't fix the downloads not starting issue , same error 498 :/
I tried stopping a certain service like google play or somethin in the task manager like that and that made so I couldn't even get back in to google play even after power cycles .
probably could have just updated but I didn't feel like doing that so I just factory reset phone , everything was fine after that so I felt like the problem was my device ( client side error ) not google ( server side )
I hope this helps some soul out there