{"id":2590,"date":"2011-05-16T12:00:40","date_gmt":"2011-05-16T11:00:40","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/?p=2590"},"modified":"2011-11-10T00:46:07","modified_gmt":"2011-11-10T00:46:07","slug":"changing-the-primary-email-address-for-office-365-users","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm","title":{"rendered":"Changing the primary email address for Office 365 users"},"content":{"rendered":"

In my recent post about configuring DNS for Office 365<\/a>, I mentioned that Microsoft creates mailboxes in the form of user<\/em>@subdomain<\/em>.onmicrosoft.com.\u00a0 I outlined the steps for adding\u00a0so-called “vanity” domains, after which additional (proxy) email addresses can be specified but any outbound messages will still be sent from the onmicrosoft.com address (at least, that’s what’s used in the beta – I guess that may change later in the product’s lifecycle).<\/p>\n

It is possible to change the primary address for a user (e.g. I send mail using an address on the markwilson.co.uk domain) but it does require the use of PowerShell.\u00a0 Time to roll up your sleeves and prepare to go geek!<\/p>\n

Connecting to Office 365 from Windows PowerShell<\/h3>\n

I was using a Windows 7 PC so I didn’t need to update any components (nor do Windows Server 2008 R2 users); however Windows XP SP3, Server 2003 SP2, Server 2008\u00a0SP1 or SP2 and Vista SP1 users will need to make sure they have the appropriate versions of Windows Powershell and Windows Remote Management installed<\/a>.<\/p>\n

Once PowerShell v2 and WinRM 2.0 are installed, the steps to connect to Office 365<\/a> were as follows:<\/p>\n

Prompt for logon credentials and supply the appropriate username and password:<\/p>\n

$LiveCred = Get-Credential<\/dirtycode> <\/p>\n

Create a new session:<\/p>\n

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https:\/\/ps.outlook.com\/powershell\/ -Credential $LiveCred -Authentication Basic -AllowRedirection<\/dirtycode><\/p>\n

Import the session to the current PowerShell console:<\/p>\n

Import-PSSession $Session<\/dirtycode><\/p>\n

At this point, the session import failed for me because script execution was disabled on my machine. That was corrected using Set-ExecutionPolicy -ExecutionPolicy unrestricted<\/code> (although that’s not a great idea – it would be better to use a lower level of access) – I also had to run PowerShell as an administrator to successfully apply that command.<\/p>\n

Once scripts were enabled, I was able to import the session.<\/p>\n

List the current mailbox addresses<\/h3>\n

It’s possible that a mailbox may have a number of proxy addresses already assigned, so this is the code that I used to list them:<\/p>\n

$Mailbox = Get-Mailbox -Identity Mark-Wilson
\n$Mailbox.EmailAddresses<\/dirtycode><\/p>\n

If you want to format the list of mailboxes as a single comma-separated line, then this might help:<\/p>\n

ForEach ($i in $Mailbox.EmailAddresses) {Write-Host $i -NoNewline “`b, “}<\/dirtycode><\/p>\n

(the `b<\/code> is a backspace escape character<\/a>.)<\/p>\n

Set the primary email address<\/h3>\n

The primary email address is shown using an upper case SMTP: prefix\u00a0whereas proxy addresses use a lower case smtp: prefix.<\/p>\n

To change the primary email address, it’s necessary to reset all addresses on the mailbox with the Set-Mailbox<\/code> cmdlet.\u00a0 This is where some copying\/pasting of the output from the previous command may help:<\/p>\n

Set-Mailbox Mark-Wilson -EmailAddresses SMTP:mark@markwilson.co.uk,smtp:mark-wilson@markwilson.onmicrosoft.com,smtp:mark@markwilson.it<\/dirtycode><\/p>\n

Disconnect the session from Office365<\/h3>\n

Once all changes have been made, it’s good practice to break down the session again:<\/p>\n

Remove-PSSession $Session<\/dirtycode><\/p>\n","protected":false},"excerpt":{"rendered":"

In my recent post about configuring DNS for Office 365, I mentioned that Microsoft creates mailboxes in the form of user@subdomain.onmicrosoft.com.\u00a0 I outlined the steps for adding\u00a0so-called “vanity” domains, after which additional (proxy) email addresses can be specified but any outbound messages will still be sent from the onmicrosoft.com address (at least, that’s what’s used … Continue reading Changing the primary email address for Office 365 users<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[218],"tags":[217,82],"class_list":["post-2590","post","type-post","status-publish","format-standard","hentry","category-technology","tag-office-365","tag-scripting"],"yoast_head":"\nChanging the primary email address for Office 365 users - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Changing the primary email address for Office 365 users - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"In my recent post about configuring DNS for Office 365, I mentioned that Microsoft creates mailboxes in the form of user@subdomain.onmicrosoft.com.\u00a0 I outlined the steps for adding\u00a0so-called “vanity” domains, after which additional (proxy) email addresses can be specified but any outbound messages will still be sent from the onmicrosoft.com address (at least, that’s what’s used … Continue reading Changing the primary email address for Office 365 users\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2011-05-16T11:00:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2011-11-10T00:46:07+00:00\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"Changing the primary email address for Office 365 users\",\"datePublished\":\"2011-05-16T11:00:40+00:00\",\"dateModified\":\"2011-11-10T00:46:07+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm\"},\"wordCount\":482,\"commentCount\":17,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"keywords\":[\"Microsoft Office 365\",\"Scripting\"],\"articleSection\":[\"Technology\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm\",\"name\":\"Changing the primary email address for Office 365 users - markwilson.it\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\"},\"datePublished\":\"2011-05-16T11:00:40+00:00\",\"dateModified\":\"2011-11-10T00:46:07+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2011\\\/05\\\/changing-the-primary-email-address-for-office-365-users.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Changing the primary email address for Office 365 users\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/\",\"name\":\"markwilson.it\",\"description\":\"get-info -class technology | write-output > \\\/dev\\\/web\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\",\"name\":\"Mark Wilson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/i0.wp.com\\\/www.markwilson.co.uk\\\/blog\\\/uploads\\\/image-4.png?fit=800%2C800&ssl=1\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/www.markwilson.co.uk\\\/blog\\\/uploads\\\/image-4.png?fit=800%2C800&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/www.markwilson.co.uk\\\/blog\\\/uploads\\\/image-4.png?fit=800%2C800&ssl=1\",\"width\":800,\"height\":800,\"caption\":\"Mark Wilson\"},\"logo\":{\"@id\":\"https:\\\/\\\/i0.wp.com\\\/www.markwilson.co.uk\\\/blog\\\/uploads\\\/image-4.png?fit=800%2C800&ssl=1\"},\"description\":\"A Chartered IT Professional, with recent experience in technology leadership, IT strategy and practice management roles, Mark Wilson is an Enterprise Architect in the Advisory and Management Group at risual. During a career spanning more than two decades, Mark has gained widespread recognition as an expert in his field including both industry and national press exposure. In addition to certifications from Microsoft, VMware, Red Hat, The Open Group and Axelos, Mark held a Microsoft Most Valuable Professional (MVP) award for three years and is now part of the MVP Reconnect programme. Mark is also well-known on social media and maintains an award-winning blog.\",\"sameAs\":[\"http:\\\/\\\/www.markwilson.co.uk\\\/\",\"https:\\\/\\\/www.instagram.com\\\/markwilsonuk\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/markawilson\\\/\",\"https:\\\/\\\/x.com\\\/markwilsonit\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCWHlZCoHRTocdvtrOJ2IL4A\"],\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/author\\\/mark-wilson\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Changing the primary email address for Office 365 users - markwilson.it","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm","og_locale":"en_GB","og_type":"article","og_title":"Changing the primary email address for Office 365 users - markwilson.it","og_description":"In my recent post about configuring DNS for Office 365, I mentioned that Microsoft creates mailboxes in the form of user@subdomain.onmicrosoft.com.\u00a0 I outlined the steps for adding\u00a0so-called “vanity” domains, after which additional (proxy) email addresses can be specified but any outbound messages will still be sent from the onmicrosoft.com address (at least, that’s what’s used … Continue reading Changing the primary email address for Office 365 users","og_url":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm","og_site_name":"markwilson.it","article_published_time":"2011-05-16T11:00:40+00:00","article_modified_time":"2011-11-10T00:46:07+00:00","author":"Mark Wilson","twitter_card":"summary_large_image","twitter_creator":"@markwilsonit","twitter_site":"@markwilsonit","twitter_misc":{"Written by":"Mark Wilson","Estimated reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm#article","isPartOf":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm"},"author":{"name":"Mark Wilson","@id":"https:\/\/www.markwilson.co.uk\/blog\/#\/schema\/person\/98f61365e7c39d6be942174b8c4de468"},"headline":"Changing the primary email address for Office 365 users","datePublished":"2011-05-16T11:00:40+00:00","dateModified":"2011-11-10T00:46:07+00:00","mainEntityOfPage":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm"},"wordCount":482,"commentCount":17,"publisher":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/#\/schema\/person\/98f61365e7c39d6be942174b8c4de468"},"keywords":["Microsoft Office 365","Scripting"],"articleSection":["Technology"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm","url":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm","name":"Changing the primary email address for Office 365 users - markwilson.it","isPartOf":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/#website"},"datePublished":"2011-05-16T11:00:40+00:00","dateModified":"2011-11-10T00:46:07+00:00","breadcrumb":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.markwilson.co.uk\/blog\/2011\/05\/changing-the-primary-email-address-for-office-365-users.htm#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.markwilson.co.uk\/blog"},{"@type":"ListItem","position":2,"name":"Changing the primary email address for Office 365 users"}]},{"@type":"WebSite","@id":"https:\/\/www.markwilson.co.uk\/blog\/#website","url":"https:\/\/www.markwilson.co.uk\/blog\/","name":"markwilson.it","description":"get-info -class technology | write-output > \/dev\/web","publisher":{"@id":"https:\/\/www.markwilson.co.uk\/blog\/#\/schema\/person\/98f61365e7c39d6be942174b8c4de468"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.markwilson.co.uk\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":["Person","Organization"],"@id":"https:\/\/www.markwilson.co.uk\/blog\/#\/schema\/person\/98f61365e7c39d6be942174b8c4de468","name":"Mark Wilson","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-4.png?fit=800%2C800&ssl=1","url":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-4.png?fit=800%2C800&ssl=1","contentUrl":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-4.png?fit=800%2C800&ssl=1","width":800,"height":800,"caption":"Mark Wilson"},"logo":{"@id":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-4.png?fit=800%2C800&ssl=1"},"description":"A Chartered IT Professional, with recent experience in technology leadership, IT strategy and practice management roles, Mark Wilson is an Enterprise Architect in the Advisory and Management Group at risual. During a career spanning more than two decades, Mark has gained widespread recognition as an expert in his field including both industry and national press exposure. In addition to certifications from Microsoft, VMware, Red Hat, The Open Group and Axelos, Mark held a Microsoft Most Valuable Professional (MVP) award for three years and is now part of the MVP Reconnect programme. Mark is also well-known on social media and maintains an award-winning blog.","sameAs":["http:\/\/www.markwilson.co.uk\/","https:\/\/www.instagram.com\/markwilsonuk\/","https:\/\/www.linkedin.com\/in\/markawilson\/","https:\/\/x.com\/markwilsonit","https:\/\/www.youtube.com\/channel\/UCWHlZCoHRTocdvtrOJ2IL4A"],"url":"https:\/\/www.markwilson.co.uk\/blog\/author\/mark-wilson"}]}},"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":5032,"url":"https:\/\/www.markwilson.co.uk\/blog\/2013\/10\/issues-connecting-to-office-365-using-powershell-check-the-client-firewall.htm","url_meta":{"origin":2590,"position":0},"title":"Issues connecting to Office 365 using PowerShell? Check the client firewall","author":"Mark Wilson","date":"Saturday 26 October 2013","format":false,"excerpt":"I've written previously about managing my Office 365 tenant using Windows PowerShell\u00a0(Microsoft has since provided its own documentation on the topic) but I tried today and found that I couldn't get a connection. Every time I tried to create a session, the response came back as: [ps.outlook.com] Connecting to remote\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/powershell-office365.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/powershell-office365.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/powershell-office365.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":3218,"url":"https:\/\/www.markwilson.co.uk\/blog\/2011\/11\/office-365-password-resets-and-disabling-password-expiry.htm","url_meta":{"origin":2590,"position":1},"title":"Office 365 password resets… and disabling password expiry","author":"Mark Wilson","date":"Thursday 10 November 2011","format":false,"excerpt":"My Office 365 account password expired today and, somewhere in the midst of the password reset I managed to lock myself out. \u00a0As I only have one mailbox on the account (i.e. I am the administrator), that's a bit of a problem... I tried creating a service request to reset\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5309,"url":"https:\/\/www.markwilson.co.uk\/blog\/2014\/08\/administering-office-365-using-powershell-updated-information-on-the-required-components.htm","url_meta":{"origin":2590,"position":2},"title":"Administering Office 365 using PowerShell: updated information on the required components","author":"Mark Wilson","date":"Monday 18 August 2014","format":false,"excerpt":"I've written before about\u00a0administering Office 365 from PowerShell but the process has changed slightly over the years. \u00a0There are various articles out there on the web with methods and links but the key information (as at August 2014) is in a TechNet article titled Manage Azure AD using Windows PowerShell.\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6005,"url":"https:\/\/www.markwilson.co.uk\/blog\/2015\/09\/cant-add-a-domain-to-office-365-because-its-already-in-use.htm","url_meta":{"origin":2590,"position":3},"title":"Can’t add a domain to Office 365 because it’s already in use","author":"Mark Wilson","date":"Thursday 17 September 2015","format":false,"excerpt":"Adding a domain name to Office 365 is usually pretty straightforward. That is unless it's already been used for another tenant that you don't have access to - perhaps a trial that's expired? Or someone signed up for some Microsoft Online services using their work email address but doesn't have\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"Sorry, you can't add domainname.tld here because it's already in use","src":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/o365-cant-add-domain.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":6074,"url":"https:\/\/www.markwilson.co.uk\/blog\/2015\/09\/announcing-posh-o365-a-collection-of-powershell-scripts-for-office-365-management.htm","url_meta":{"origin":2590,"position":4},"title":"Announcing posh-o365, a collection of PowerShell scripts for Office 365 management","author":"Mark Wilson","date":"Wednesday 30 September 2015","format":false,"excerpt":"I have a growing collection of PowerShell scripts for Office 365 management and, whilst I may not be the best scripter\/coder out there (I'm pretty sure there are many people who could look at my scripts and say \"there's a better way to do that\"), I'm open-sourcing them in the\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6340,"url":"https:\/\/www.markwilson.co.uk\/blog\/2016\/04\/marks-office-365-resource-centre.htm","url_meta":{"origin":2590,"position":5},"title":"Retired: Mark’s Office 365 Resource Centre","author":"Mark Wilson","date":"Monday 18 April 2016","format":false,"excerpt":"18 months ago, I created \"Mark's\u00a0Office 365 Resource Centre\" using\u00a0the public site from my Office 365 subscription. Over the last few months it's fallen by the wayside as my focus has recently moved towards Azure (and Office 365 public websites are a deprecated feature) so I decided to move it\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/2590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=2590"}],"version-history":[{"count":10,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/2590\/revisions"}],"predecessor-version":[{"id":3232,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/2590\/revisions\/3232"}],"wp:attachment":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=2590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=2590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=2590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}