Hi Marcus,

> Is it possible to reset NC somehow?

Reset/Restart Notification Center:
You can forcibly restart the Notification Center in Terminal.app by issuing the 
following command string:

killall NotificationCenter

Note there is no space between the names 

Cheers,

Ronni

Sent from Ronni's iPad4

> On 2 Nov. 2016, at 4:41 pm, Marcus F Harris <cryptodo...@me.com> wrote:
> 
> Hi Ronni,
> Thanks for your advice. Yes, Sierra otherwise operates just fine.
> I pretty much know how NC works as I had no issues before with El Capitan.
> 
> I wouldn’t be concerned except when NC is functioning it reveals Mail alerts 
> which cover the RHS of the screen and cannot be deleted. In fact if I point 
> the mouse any where near the alerts, the system will freeze with the spinning 
> wheel turning for up to 20 seconds.
> 
> I have turned all the NC alerts off  and that clears that up. As soon as I 
> turn Mail back on the alerts reappear and block the screen.
> Then I have to restart.
> 
> I have a lot of emails in iCloud as I’m uncertain how to delete them en masse 
> so maybe that’s an issue
> 
> Is it possible to reset NC somehow?
> Cheers
> 
> Marcus
> Marcus F Harris
> cryptodo...@me.com
> Marcus F Harris
> cryptodo...@me.com
> iMac 27D Late 2009
> OS10.12.1
> 3 GHz Intel Duo Core
> 8Gb Ram
> 
> 
> 
>> On 1 Nov. 2016, at 9:36 pm, Ronda Brown <ro...@mac.com> wrote:
>> 
>> Hi Marcus,
>> 
>> I have not experienced any problems with Notification Center in Sierra or 
>> iOS 10 on my Macs and iDevices. So I don't think your issue is caused by 
>> Sierra.
>> 
>> Have you had a good read on how to use Notification centre in Sierra?
>> https://support.apple.com/kb/PH25142?viewlocale=en_US&locale=en_US
>> macOS Sierra: Use Notification Center.                                       
>>            
>> Alerts, alarms, reminders, email-chances are you see a steady stream every 
>> day. Notification Center is Sierra's Grand Central Station for the 
>> information competing for your attention. It's settings control which apps 
>> can post messages to the upper-right corner of your display, as well as how 
>> those messages look.
>> The Notification Center sidebar, which slides in from the right of your 
>> screen, gives you an overview of it all.
>> 
>> Have you set control Notifications' look? Individual notifications appear at 
>> the top-right of the screen. You can tweak how they appear, or whether they 
>> appear at all, on an app-by-app basis.
>> Go to System Preferences > Notifications and select an app from the list at 
>> the left. Now set up the way that app will notify you at the right. You can 
>> pick from three Notification styles.
>> 
>> Cheers,
>> Ronni
>> Sent from Ronni's iPad4
>> 
>> 
>>> On 1 Nov. 2016, at 7:29 pm, Marcus F Harris <cryptodo...@me.com> wrote:
>>> 
>>> Hi,
>>> I’m still trying to resolve this corruption of (NC) Notification Centre.
>>> NC operated well with El Capitan but is problematic with Sierra.
>>> 
>>> I think it is due to interference between Google and Apple mail accounts. 
>>> I have tried turning them on and off alternately and the freezing of NC 
>>> arises when email notices present to be either closed or replied to.
>>> If I try either of those options, nothing happens and the NC freezes for up 
>>> to 20 seconds. 
>>> As long as these email notices don’t appear I can switch on NC.
>>> 
>>> BY THE WAY the email notices that appear are all from my gmail account.
>>> 
>>> I’m going to turn off gmail completely and access them from the website and 
>>> see if that makes a difference.
>>> If you have any other ideas, please feel free to let me know.
>>> 
>>> 
>>> Cheers
>>> 
>>> Marcus
>>> Marcus F Harris
>>> cryptodo...@me.com
>>> Marcus F Harris
>>> cryptodo...@me.com
>>> iMac 27D Late 2009
>>> OS10.12.1
>>> 3 GHz Intel Duo Core
>>> 8Gb Ram
>>> 
>>> 
>>> 
>>>> On 28 Oct. 2016, at 2:04 pm, Marcus F Harris <cryptodo...@me.com> wrote:
>>>> 
>>>> Thanks Peter and Ronni,
>>>> I have an apple Bluetooth mouse only.
>>>> I have two gmail accounts and one iCloud account.
>>>> I will try turning off the gmail accounts and see if that helps.
>>>> Let you know ASAP.
>>>> Cheers
>>>> Marcus 
>>>> 
>>>> Sent from Marcus iPhone 5
>>>> 
>>>>>> On 28 Oct. 2016, at 7:58 am, Peter Hinchliffe 
>>>>>> <hinch...@multiline.com.au> wrote:
>>>>>> 
>>>>>> 
>>>>>> On 27 Oct. 2016, at 10:56 pm, Marcus F Harris <cryptodo...@me.com> wrote:
>>>>>> 
>>>>>> Someone else may have problems with the Notification Centre since 
>>>>>> installing Sierra and had feedback that I missed.
>>>>>> 
>>>>>> Notifications appear as before on the RHS of the screen. These are 
>>>>>> mostly MAIL notifications.
>>>>>> 
>>>>>> Before installing Sierra with El Capitan all my apps worked well.
>>>>>> 
>>>>>> Now Notifications will not respond to mouse clicks and the system 
>>>>>> freezes for up to 15 seconds before responding.
>>>>>> 
>>>>>> I have tried disk doctor and looking for a solution in System prefs, but 
>>>>>> I’m stumped.
>>>>>> 
>>>>>> Any advice gratefully received
>>>>> 
>>>>> Everything is working fine on my system Marcus. Whatever else is going 
>>>>> it’s unlikely to be a Sierra issue per se; more likely something else you 
>>>>> have running that needs an update.The tried and true simple trouble 
>>>>> shooting  resource is to log into another account on your computer 
>>>>> (create a new one if necessary) and see if the problem persists, just to 
>>>>> rule out the possibility of something specific to your account.
>>>>> 
>>>>> Peter Hinchliffe        Apwin Computer Services
>>>>> FileMaker Pro Solutions Developer
>>>>> Perth, Western Australia
>>>>> Phone (618) 9332 6482    Mob 0403 046 948
>>>>> --------------------------------------------------------------------
>>>>> Mac because I prefer it -- Windows because I have to.
>> 
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