i am unable to download apps from store its always showing error 80070020 :(

FWIW, another Windows site says the work around for Windows Phone 8.1 is to temporarily set the phone's date to December 3, 2017.

Logged in to ask this same question this morning. I just bought a Lumia 929, and was bummed that the store isn't working. Just changed the date to December 3, 2017, and all is well. THANK YOU SO MUCH!!!!
 
It would have been, if the bug was actually fixed. Downloading from the Store on WP8.1 still fails.
You are right. MS's fix is being installed to affected phones. But they say it could take days before all are updated. When I posted it had been fixed, I hadn't read the fine print about the fix not being instantaneous for every phone.
 
You are right. MS's fix is being installed to affected phones. But they say it could take days before all are updated. When I posted it had been fixed, I hadn't read the fine print about the fix not being instantaneous for every phone.

You got official word from Microsoft? Can you post a link to where you read that they were working on a fix?