Can anyone help me with a basic step by step guide in resetting the pasword on a Synology NAS to admin/blank, including the pitfalls (like reestablishing The ip adress). Have read the Synology forum, but still not seen any clear guidlines, but a lot of confusions. Have had good help from Naim forum before, so my best hope here 
I tried to logon to my synology NAS, but the usual admin with empty password is not working any more. I use auto update, and have just read that a synology update has removed this "option".
I have a minimum of network knowledge, and would like to be prepared, before just jumping into "hit the reset bottum".
I use my NAS with 272+555, 300 and US, but had set it up a long time ago 
Posted on: 11 August 2016 by kiba
Hi, i know, press nas reset buttom, but what about my network settings, according to synology, The ip adrees will be default, how can i establish this one again, and are tjere other pitfalls ?
Posted on: 11 August 2016 by Mike-B
I've never heard of this problem & wonder what did you do to prevent it working as it was before, A reset & start again is the best way forward.
Press the reset button on the NAS until you hear the beep sound. Then start over as a new install. Password will be default "blank", reset guest account to disabled & set yourself as administrator & then (please) set your own password.
Next advice is don't mess around with IP addresses, if you get it wrong (& thats easy to do) its a bad place to be & I suspect that might be something thats got you in your password problem. Please reset all your system to DHCP, the wireless hub/router is the DHCP manager & it is a real expert at correctly setting up your network: Set every component on the system to DHCP first , then switch the whole system off, leave it off for 5 minutes & then switch on in sequence; router first & let it complete its startup process, then start NAS & after its completed the 272 & then whatever else makes up the system.
Posted on: 11 August 2016 by Bananahead
Again.
When you try logging onto the NAS you get the USER/PASSWORD screen that has a "I Forgot my password" option. Have you tried that?
I don't think that you need to reset your NAS.
Posted on: 11 August 2016 by kiba
Hi, thanks for your answer.
The situation root cause is, that I did not create an admin password in the first place, I left it blank as left by synology. But an update 5.2-5644, 20151117, by synology, do not allow this any longer. As i run auto update, I was locked out by synology. I know of the reset button, but reading in the synology forum, there are different not so good experinces. i have not changed any default settings to my knowledge, so yes it's maybe not so complicated, I can press reset, and hope that every thing works (read US can see NAS) and then I can log into the NAS with admin/ blank, and after this make a admin pasword of my own
Posted on: 11 August 2016 by kiba
Hi, all well
I hit the reset button, made new password, and every thing is working,
thank you all for your replies
, the forum worked again, and fast
Posted on: 12 August 2016 by Bart
Glad all is sorted it can be extremely frustrating at times.
Not to be too picky . . . BUT . . . the obvious solution was to do that reset button process. Only frustrating if you do a lot of hand-wringing. Sure, there somewhere online is someone having posted, "I pushed that reset button and my nas exploded and burnt down my home," but one must filter such posts with a little common sense.