What does the error code c101b000 represent?

Apologies - just seen a reply above saying what the fault is :) Sadly too late as recently did a hard reset.

Mine has just come up with the same error fault.. 01/03/17. I've never had a problem with my Lumia 530. I've tried all the solutions I've come across from various posts. Just done a hard reset and I still have the error. Where before I was unable to install a new app, having hard reset and still getting the error I can not install anything! Is there a solution? I have tried calling Windows Help and used their Chat help, both of which can no longer provide support for Windows Phones. They put me through to B2X who do not recognise the fault!!

Sooo how to resolve fault c101b100 ?

The error code and the solution is the same, regardless of the year.

As already posted just two messages above yours, this is a problem with the store on Microsoft's side which reoccurs every few weeks. Unfortunately there is absolutely nothing anyone can do except wait for it to be fixed by MS. There is no point in performing any resets or, God forbid, a complete firmware reinstall. This is not an issue with any device, it's on the store servers.

huehuehue sorry dude i think it's only me who get this problem this year

found one where Microsoft says make sure your time and location are correct and to make sure phone software is updated.... Mine automatically updates so that's not the problem for me.

It's 2017, and the problem is still there, My wife's 640xl has the same problem, I just asked her to do a soft reset (with phone on pressing power and volume down until phone vibrates and switches off ) I told her give it 5 mins and try again hope that works... I never seen an admin post as to how to fix this???

turned my phone back off for 1 min and trying on data connection as we speak, or well I speak. And it still didn't work.  I even cancelled them and tried downloading one at a time , but no good.