Exchange Update Fails: ‘Cannot find Arbitration Mailbox’
May11

Exchange Update Fails: ‘Cannot find Arbitration Mailbox’

KB ID 0001435 Problem Last night was a late one, Exchange 2016 update (CU9) failed to install and left the server in an unusable state. Relevant Part(s) of the Error —–Output Removed For the Sake of Brevity—–         $name = “SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}”; —–Output Removed For the Sake of Brevity—–         Write-ExchangeSetupLog -Info (“Cannot...

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Migrating Mailboxes From On-Premises to Office 365
Apr03

Migrating Mailboxes From On-Premises to Office 365

KB ID 0001419 Problem This post continues from Part-One where we connected both our domain, and on-premises Exchange server to Office 365. Now we will add our public domain, and migrate our mailboxes. Step 3 Adding Domains to Office 365 Before proceeding you will need administrative access to your public DNS records so you can create new records. Log into Office 365 > Admin Console. Add a domain. Enter your public domain name >...

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Exchange: Blank Certificate Name
Mar20

Exchange: Blank Certificate Name

KB ID 0001411 Problem You see this a lot with 3rd party (purchased) certificates, especially if you have imported them from something else e.g. a web site, appliance, NetScaler, etc. The correct certificate, is there, it’s just got no name? Solution Open an MMC console (Start > Run > mmc {enter}) File > Add Remove Snap-in > Certificates > Select ‘Local Computer’ > Open Personal > Certificates > Locate...

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Connect to Office 365 Exchange PowerShell
Mar14

Connect to Office 365 Exchange PowerShell

KB ID 0001410 Problem If there’s one thing thats grown on me it’s PowerShell, After the last few versions of Exchange you can’t really escape it. So now we have so many clients with their Exchange in Office 365. The ability to connect to that, and use all your usual Exchange commandlets is a bonus! WARNING: This process may end up with you getting an “Access is denied” error, if you are using modern...

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Users Cannot Access Public Folders Post Migration (Exchange 2016)
Mar29

Users Cannot Access Public Folders Post Migration (Exchange 2016)

KB ID 0001295  Problem This post comes form my colleague Andrew Dorrian, he usually follows my migrating public folders article. Recently after a couple of Exchange 2016 migrations he has seen a problem where the public folders are visible in the Exchange Admin Console, but the users can’t access them. Solution Open ADSIedit.msc and connect to the ‘Configuration’ context. Navigate to; CN=Services > CN=Microsoft...

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OWA 2016 – Change Login From Domain\Username to Username
Nov07

OWA 2016 – Change Login From Domain\Username to Username

KB ID 0001254  Problem Out of the box, if you want to log into Outlook Web App, you need to use the Domain\Username format, like so; Seeing as how Microsoft are making a big song and dance about using UPN’s to log into Office 365, I thought they might have changed from the NT4 way of doing things, but hey what do I know? As we all know users are stupid, Domain\Username is up there with string theory and quantum mechanics. So how...

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Outlook Web App :-( Something Went Wrong
Oct28

Outlook Web App :-( Something Went Wrong

KB ID 0001252  Problem I tried to get access to OWA on my Exchange 2016 server, and was greeted with this; 🙁 Something Went Wrong We’re having trouble getting to your mailbox right now.Please refresh the page or try again later Solution I’ve pointed it out on the image above, but it’s easy to miss, look at the time stamp on the error, and compare it to the correct time. The two are not the same. This is a known...

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Exchange 2016 (& 2013) Enable Circular Logging
Aug02

Exchange 2016 (& 2013) Enable Circular Logging

KB ID 0001224 Problem Let’s be clear about this, the correct way to flush/clear the Exchange logs is to perform a backup of the mailbox database in question, with an ‘Exchange aware’ piece of backup software. This will clear down the logs properly. Why Do We Need Logs? Well I’m glad you asked, if there’s a problem, and we lose the database, we can ‘play’ the log files back into the database to...

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The name of the security certificate is invalid or does not match the name of the site
Aug02

The name of the security certificate is invalid or does not match the name of the site

KB ID 0000036 Problem Seen in Outlook when connecting to a mailbox on an Exchange Server, its caused by using a self signed certificate OR a purchased certificate, where the internal and external names are different. The name of the security certificate is invalid or does not match the name of the site. Solution Before proceeding if you have an A or CNAME record in your DNS for autodiscover  then DELETE it and setup an SRV record!...

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Exchange – ‘Not all the required authentication methods were found’
May04

Exchange – ‘Not all the required authentication methods were found’

KB ID 0001180  Problem I had to visit a client who had recently gone through an Exchange migration, now his external mail clients were having a nightmare staying connected to Outlook Anywhere. I ran the Exchange connectivity tester and got this; Additional details Not all the required authentication methods were  found Methods Found: Basic Methods Required: NTLM   Solution Looks like an open and shut case, someone forgot to enable...

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