ADFS: Deploy Active Directory Federation Services
KB ID 0001140 Problem The actual configuration of ADFS depends largely on what you intend to do with it. Here I’m using it to broker connections from my Microsoft Web Application Proxy. This article is just to ‘join the dots’ and covers just the installation of the role itself. Solution Before you Start: Make sure you have a certificate ready to use for ADFS. I typically use a wildcard cert for this, it’s...
ADFS Test Page Error
KB ID 0001545 Problem I was setting up ADFS in Server 2019 today, and once I have all the basics setup, I like to got to, https://{server-fqdn}/adfs/ls/IdpInitiatedSignon to test, but this happened; The resource you are trying to access is not available. Contact your administrator for more information. Error details .Activity ID: 3c53140c-cff3-4b59-0900-0080010000d4 .Error details: MSIS7012: An error occurred while processing the...
Office 365: Stop One User Sending Attachments
KB ID 0001544 Problem If you have one, (or more) users and you want to BLOCK those users from sending ANY email attachments, here’s how to do it; Solution Log into your Office 365 tenancy with administrative access > Admin > Admin Centers > Exchange Admin > Mail Flow > Rules > Add > Filter Message By Size. Name: Give it a sensible name. Apply This Rule If: The message size is greater than or equal to = 1.00...
Cant Copy a Group Policy Object
KB ID 0001543 Problem Was asked this this morning, why couldn’t someone ‘Copy’ a Group Policy Object (GPO)? Solution At first I was confused, (I made the same mistake they had), look at what I’m trying to copy? It’s not a Group Policy Object, its a ‘Link’ to a GPO. (Note: There’s a shortcut arrow!’) Locate the actual GPO and you can copy it! Related Articles, References, Credits,...
Test Port Connectivity Through a Firewall
KB ID 0001541 Problem Test Port Connectivity: I was asked if I had a test Exchange server that someone could test TCP port 587 to this morning. Usually if I need to test a port I simply use Microsoft IIS and then set it to the appropriate port, add a ‘welcome banner’ and telnet to it. This time it didn’t work, so I found a small application that you can use for this very purpose. How to Test Port Connectivity Test...
Veeam: Error No Backup Proxy is Available
KB ID 0001540 Problem I was asked to take a look at this by a colleague; Unable to allocate processing resources Error: No backup proxy is able to process this VM due to proxy processing mode restrictions. Solution This is a pretty generic error to be honest, at first glance it would look like the proxy either needed more CPU/RAM, (or another proxy adding altogether). However and the root cause was the Veeam server was attached to...
Remote Connect to macOS
KB ID 0001539 Problem Remotely connecting to Windows is easy we’ve had RDP since Windows NT4, (yes I’m that old). But what if you want to remote connect to a mac? Well that has ‘Screen Sharing’ built in, (which it pretty much the same, but it uses VNC). If you’re unfamiliar with VNC, (Virtual Network Computing,) you can install it on both Windows and Linux. Normally you need a client, (to connect with)...
Windows Adding Firewall Rules With PowerShell
KB ID 0001538 Problem There was a question on Experts Exchange this morning, the asker wanted to be able to add a ‘Trusted’ network range to their Windows Server Firewall settings as a ‘allow all ports’ rule. Solution You can of course add this manually in the GUI, normally I’d simply Add a Firewall Rule with a Group Policy. but the problem with that is, that’s fine if you want to open a particular...
Safari – Download ZIP files (Not Open Them!)
KB ID 0001537 Problem I’d forgotten Safari did this, after replacing my mac a few weeks ago I was trying to download a ZIP file from Github, and was perplexed that it was getting extracted to a folder in my downloads folder, and not appearing as a ZIP file? Solution After about the third time, the penny dropped. Safari does this by default. You need to disable it. Safari > Preferences > General > UNTICK : Open...
You Have Exceeded the Maximum Number of Computer Accounts
KB ID 0001536 Problem A few weeks ago, this was asked in a forum, and while I knew what the problem was, I’d never seen it myself. So I recreated the problem on the test network to look at why it happened, and how to fix / get around the problem. The following error occurred attempting to join the domain {domain-name} You computer could not be joined to the domain, You have exceeded the maximum number of computer accounts you...