Anyone else having problems?   I have a bunch of these devices all with the latest updates and haven't noticed any problems.  Very odd.

I have the Venue 11 Pro 5130. My stylus has got a lot worse in the last few weeks. When I first had it (A01) it was great. Now I find that I need to write for a few seconds to get it to come on, then for the next few seconds it has terrible trails & writes on the screen even when held a few cm away. Then it settles down & works great, until it powers down, then when I start writing again I have to do the same thing again.

I've contacted dell & they're sending a new stylus, so will see if that fixes it.

I don't see any reason that the Windows updates would stop the stylus from working.   The functionality is controlled by firmware and hardware within the tablet and pen.   If your pen isn't working properly, please contact support to ask for a replacement and post here to let me know if that resolves the issue.   This seems very unusual.

In my case it was a duff stylus - got a new one today (A02) & it fixed everything.

I spoke to soon....My Stylus is acting very unreliable again even when I put new batteries in it.  How many people on here have the Dell Screen Protector on their  unit? I do, and I am wondering if that my be a contributing factor??? Any thoughts?

I have just purchased a A02 stylus. It works for a few seconds and then goes dead. I've tried changing the battery. Once it goes dead it doesn't seem to work at all. If I try again the next day it'll do the same thing.

I've had a couple of styluses, one worked like garbage, the other worked perfectly.  I tried swapping the batteries, etc., nothing helped.  I sent the defective one back to Dell without a problem.  Would suggest you do the same.  

Are you using a screen protector - I've heard some can severely mess with the stylus.  

No screen protector. I've discovered that the stylus does sort of work if the tablet is vertical (e.g. in the keyboard dock) and the stylus is being used almost horizontal. If the tablet is flat on the desk and I'm trying to use the stylus vertically like a pen it doesn't work. Maybe a loose connection inside ?

Whatever, I think I'll have to return it for a replacement.