O365: Skype for business 2016 - GPO for switching off splash screen

When you need to disable splash screen for users you, can apply group policy with preferences/register settings adding this key:
HKCU\Software\Policies\Microsoft\Office\16.0\Lync\DisableSplashScreen
with value of 1.
Additionally, you need to have update installed:
https://support.microsoft.com/en-us/help/3128049/january-3--2017--update-for-skype-for-business-2016-kb3128049

Source:
https://support.microsoft.com/en-us/help/3213034/option-to-suppress-the-skype-for-business-2016-startup-splash-screen

Azure: Azcopy error : Failed to validate destination

When you try to upload files into Azure using AzCopy command line you ca encounter this error:
Failed to validate destination: One or more errors occurred. The remote server returned an error: (404) Not Found.

Before you start pulling hair from your head just uninstall new version of AzCopy and install an old one.
For me, the latest working version is 5.0

Migration between two Office 365 tenants

In the era of cloud solutions, soon or later we will face the challenge of connecting two of them together. Merges and acquisitions of companies which possess separate cloud IT infrastructure needs to be joined, unified and also simplified if possible.

Using experience after few successful migrations, I will try to explain here the most important things to consider in similar projects, when Office356 is involved.

This is not step by step instruction – only lessons learned from the migration field.

At the beginning - things which appears every time you plan a change in the organization.

Determine customer expectations and goals

The most important thing, which – when chasing for time and money some people forget - the success of the project depends on the fulfilment of customer expectations. Dot.

More you can read at the Gooroo site:

https://gooroo.io/GoorooThink/Article/17097/Migration-between-two-Office-365-tenants/latest

Office365: Removing all Exchange aliases from user accounts - moving from/to O365

In order to remove the domain form the Office365 subscription,  you need to delete all aliases.
There are many articles on the subject, how to remove one alias, but no data about how to remove ALL aliases from ALL accounts.
This little script will help you when you need to move to another O365 tenant or from cloud to on premises Exchange.

$alias = Get-Mailbox -resultsize unlimited

foreach($x in $alias)
{
$x.emailaddresses = $x.userprincipalname
Set-mailbox $x.alias -emailaddresses $x.emailaddresses
}

Office365: Change public folder default quota limit

Hi,
In the Exchange Organisation, there are quotas per Public Folder mailbox for the items ...

..and as a whole organisation:

If you receiving warnings about quota when using public folder, then you need to change organisation wide settings. For this example we have had DefaultPublicFolderIssueWarningQuota set to 1.7GB and DefaultPublicFolderProhibitPostQuota set to 2GB.

Now, we change it to 35 and 40GB respectively:

And all is set now!

Office365 Outlook: Send as right does not work

After adding Send As rights in the Office365 Exchange portal, do not expect that Outlook will work with these permissions automatically.
It needs time to propagate changes and download fresh copy of Offline Address Book.
You can try to speed up the process by:
1.Deleting old entry of address from the FROM field in Outlook (delete auto-complete hint)
2.Getting fresh copy of OAB (Outlook, Send/Receive, Send/Receive groups, Import address book)
3.Wait...and try again if it does not work. Remember it could take 24-72 hours to propagate changes in OAB

Office365: I can't see MDM management in my subscription yet. Trial E3 subscription most affected.

I was able to switch on management of Office365 MDM functionality in my production environment - mobile option was in place, but in the trial subscription, where I wanted to check the things out before deploying in production - option was not visible.

How to turn on Office365 MDM in my subscription?
In Office365 administration panel there is an option regarding updates.
Because Microsoft now rolls out this feature is not deployed everywhere.
If you want to see this option on your side, you need to change update settings from "Standard Release" to "First Release"

In the user' license tab you can find that MDM option is not active yet

And in the Office365 option you cannot find 'Mobile' section

Youi should go to "Updates" section

And change it from "Standard Release" to "First Release"

And after a while you should see 'Mobile Devices" section