tab s7+ stuck in Android Recovery when restart after adding user

[Joonohh]

Hi, 

I just got the new tab s7+ yesterday.

After i set it up with me being the primary user(admin), i added 2 new users for my sons.

And after that whenever i restart the tablet, it won't start after Samsung logo, and goes into Android Recovery.

At this point, i cannot do anything but do factory reset and have to go through the set up again. 

I already tried multiple times with this scenario and it crashes every time.

I even tried with restricted user and same result.

I tried not adding new users after the set up, and then it won't crash if i restart the tablet.

I do not have any 3rd party app installed.

I checked for any software update, but there is none.

This is what the rescue summary says after it crashes after restart:

FATAL EXCEPTOIN IN SYSTEM PROCESS: main
java.lang.NullPointerException Attempt to invoke virtual method 'boolean.com.android.server.wm.WindowManagerService.detectSafeMode()' on a null obejct reference

?at com.android.server.SystemServer.startOtherServices(SystemServer.java:2215)

?at com.android.server.SystemServer.run(SystemServer.java:899)

?at java.lang.reflect.Method.invoke(Native Method)

?at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)

?at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1078)

[paulomu]

Same issue here. I bought a Samsung Galaxy Tab A 8" with the S Pen (SM-P205) 1 month ago, updated to the last Android version and configured with 3 users. Everything was working absolutely fine: lots of apps installed, 4G connectivity, 64GB SD card, restarted many times, not a single complain. Today I've found myself locked out of my user with the message "Try again in 30 seconds (29, 28...)". So I tried to restart it and boom:

I can't believe I'll have to wipe everything and start from scratch again. I'll not buy any Samsung device again if this don't get officially answered and fixed.

[coyote64]

Hi,

Same issue today with a galaxy S6 lite tablet (for Europe, France).
I have 3 users on it : my 2 kids and I.
The multi-users has worked for few months now. I had few issues at the beginning (I don't remember in details) but now, I have the same blocking issue as described in this post.

Here is my scenario : (in case it help any samsung support)

My tab had not much free space (a bit more than 1 Gb). I put a SD card few days ago.
But on the application menu, the option to modify the storage type was not available.
I though I may have badly formatted the SD card as external device and not internal.
So, I put it on windows and backup the couple of files on it. (around 10 video and 3 .android_secure) files.

Then, I formatted the SD card on windows (oups). I though the tablet would start without the card since almost nothing was on it yet.
But no, the tablet is stuck at the Samsumg logo.

I have a second S6 lite (I love the s-pen 🙂 ) and I tried to remove the sd card, no issue. I put the new card on it, reformatted it. Then copy from windows the 3 android_secure files I backuped.
I though the with a SD card content similar to the beginning, it would work back. Nope, I put the card again in my stucked tablet, it didn't work. It is not possible to make it start anymore : with or without the SD card. Always the same detectSafeMode null pointer exception.

The main difference between my 2 tablets is than the working on has only one user... and the stucked on has 3  users.
So I am quite sure that even the trigger of the bug might be the SD card change, the issue is linked to the multi-user too.

I have a last Samsung device (note 9) with only one user and never got this issue.

I don't want to erase all the data of my kids (one was crying tonight). So any idea would be interesting.

Hope this reply will be useful for somebody.

[coyote64]

I forgot to say I tried to launch the stuck tablet in Safe mode ny pressing the "down volume" button when starting.
It does not help, the tablet remains stuck on samsung logo

[geri1590]

Same issue here. 

Bought a Samsung Galaxy Tab A 10.5 LTE/Wifi (SM-T595NZKADBT) a year and a half ago. It was running with 2 users from the beginning. Some days ago I put a microSD card, and today it blowed out with this same error.

It's astonishing that I have to wipe all the data after a year and half working with it, just because I put a microSD.