Surface Pro 4 Pen needs to be re-bluetooth paired after waking up/turning on surface

You seem to be your own worst enemy.  Your attitude will get you nowhere, either on this forum or with Microsoft.  The rest of my comment is directed to the more reasonable posters on this thread.  

It is highly unlikely that Microsoft will provide a fix specific to this problem since most sp4 owners at least in the US are not experiencing this issue, IMO.  Unless Microsoft can reproduce this problem or someone supplies them with an sp4 with the problem no fix will be forthcoming leaving only 3 choices; live with it until and if by some miracle it is fixed, take legal action, or keep replacing the unit under warranty until u get a good one.  IMO the 3rd choice is the best.  Microsoft has sold probably a million+ sp4s so 20 or 30 complains on this forum is statistically hardly significant.  Remember that each time you get  a replacement your warranty gets pushed out another 90 days minimum.  If you live in the US use that advantage and go to a Microsoft retail store and let them replace your sp4 and don't leave the store until you fully checkout the replacement.  Try and convince them to give you a new unit especially if you have already received a bad replacement.  The people at the retail stores are generally much more helpful and cooperative then Microsoft online or phone support.  Whatever you do don't cop an attitude like yasiekk as it will only hurt your case.  Good luck.  I will no longer be monitoring this thread.

Please don't even bother starting ad personam arguments. Your reply contains exactly what Microsoft suggests when encountering any issues that make the suggest "oh it's not us, it's your or your single device, it'a not a widespread problem". And replacement didn't fix it at all. Event log suggests it'a a system/driver problem, not a hardware one, so please, stop.

If u had read my followup reply instead of shooting your virtual mouth off u would have realized that my reply contains your only alternatives and that your reply shows just how ignorant you are.  Your units are defective and only a replacement from Microsoft has any chance of fixing the problem.  I don't need to waste my time reading all the post in this thread to come to that obvious conclusion.  There are plenty of sp4s out there that don't have your issue.

If you'd take your time to read through this topic you'd know, that people (including me) had their devices and their pens replaced multiple times and the issue still persists. Re-installing Windows and installing all the updates is one of the first troubleshooting steps that people have done. So I'd appreciate if you'd stop posting "solutions" like this, as they don't have anything to do with solving the issue.

Since my sp4 as well 4 other sp4s I support do not have the problem I must conclude that either u are indeed very unlucky or Microsoft is exchanging warranteed sp4s with returned sp4s with other peoples issues.  I strongly suspect it is the latter reason since Microsoft doesn't repair sp4s.  If u live in the US u can go to a Microsoft retail store and swap out your sp4 and checkout the replacement before u leave. If u don't live in the US u are sadly SOL.