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!