Password sync does not work ADConnect and Office365

You just configured your ADConnect and password sync doesn't work?
Or maybe it just stopped after some configuration changes?

If you are getting errors with ID 611, then you need to check AD permissions for sync account, or if you are not sure, run embedded cmdlet in ADSyncConfig module (it's included in AD Connect from 1.1.880.0 released in August 2018 according to Microsoft)

Import-Module "C:\Program Files\Microsoft Azure Active Directory Connect\AdSyncConfig\AdSyncConfig.psm1"
Set-ADSyncPasswordHashSyncPermissions -ADConnectorAccountName YOUR_ADSYNC_ACCOUNTHERE -ADConnectorAccountDomain YOUR_LOCALDOMAIN_HERE

https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-configure-ad-ds-connector-account

msExchHiddernFromAddressList is not synced to Office365

Situation:

You need to hide Exchange Online mailbox from address list and have AD synchronization in place, but no local Exchange.

You then extend Active Directory schema by using local Exchange installation with setup.exe /prepareschema switch.

Next, you are fire up refresh directory schema in AD Connect, and do full AD sync, and...

No, msExchHiddenFromAddressList attribute is not syncing, even if it is set in AD account attributes and seen on AD Connect connector.

Solution:

If you have made all the previous steps, then probably your AD account has mailnickname attribute not set

After fill it with proper data (alias), and do another AD Connect AD sync , you can  see your msExchHiddenFromAddressList synced at last.

Cannot install Skype For Business Online Powershell

If you trying to install "SkypeOnlinePowerShell.Exe", following guide on Microsoft site: https://docs.microsoft.com/en-us/skypeforbusiness/set-up-your-computer-for-windows-powershell/download-and-install-the-skype-for-business-online-connector,
and you are getting error about VC ++ minimum version 11.0.5727, you need to install EXACTLY this version, apart from your versions already installed on your system.
So, go to the below link and install it first:
http://download.microsoft.com/download/1/6/B/16B06F60-3B20-4FF2-B699-5E9B7962F9AE/vcredist_x64.exe
Then you should be able to install SkypeOnlinePowershell

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
}