Can A Domain Trust Another Domain With The Same ‘Root Domain’ Name?
Mar07

Can A Domain Trust Another Domain With The Same ‘Root Domain’ Name?

KB ID 0001288 Dtd 07/03/17 Problem About a month ago I was with a client to do some investigation/consultancy, they were a large company with their head office in the UK and a number of other offices around the world. They had a number of domains and sub domains and wanted to consolidate them all into a new domain. Well that’s all OK, but the UK company has been purchased by a large American company, who were putting a lot of...

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Windows – A Delegation For This DNS Server Cannot Be Created
Mar06

Windows – A Delegation For This DNS Server Cannot Be Created

KB ID 0001287¬†Dtd¬†06/03/17 Problem When promoting¬†a server to be a domain controller, you might see the following error, “A delegation for this DNS server cannont be created because the authoritative parent zone cannot be found or it does not run Windows DNS server. If you are intergrating with an existing DNS infrastructure, you should manually create a delegation to this DNS server in the parent zone to ensure reliable name...

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Stop Windows Servers ‘Locking’ with Group Policy
Feb13

Stop Windows Servers ‘Locking’ with Group Policy

KB ID 0001283 Dtd 13/02/17 Problem Servers locking themselves after a period of inactivity is, (in most cases) a good thing. But on my test network that only I use it gets a bit annoying switching between machines and constantly having to unlock Windows all the time!   Note: For obvious security reasons don't do this on a production network! Solution   Create a new GPO linked to your computer OU, (or edit an existing one). Edit the...

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Error – The Computer You Are Signing Into Is Protected By An Authentication Firewall
Sep21

Error – The Computer You Are Signing Into Is Protected By An Authentication Firewall

KB ID 0001241 Dtd 21/09/16 Problem I put a ‘net use’ command in a logon script for a client today, and the drive refused to appear. So I executed the offending line and saw the following error; System error 1935 has occurred The computer you are signing into is protected by an authentication firewall. The specified account¬†is not allowed to authenticate the computer. ¬† Solution This error is seen because the user, (or...

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Robocopy – File Server Migration
Aug25

Robocopy – File Server Migration

KB ID 0001233 Dtd 25/08/16 Problem I've done a lot of migrations, and moving a client's files and shared data, usually makes them cringe.  I've lost count of the amount of times I've heard 'We can't have any downtime', which is fine, until you tell them how much its going to cost to do this on a Saturday!  As I posted recently, Microsoft have made this a lot easier with the file serve migration tools, which will do the whole thing for...

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IIS – Cannot Download File From Website (With Extension .xyz)
Aug02

IIS – Cannot Download File From Website (With Extension .xyz)

KB ID 0001223 Dtd 02/08/16 Problem I first saw this problem a few months ago, when I wasted to download some .bin and .pkg files from a web server running IIS, into a Cisco firewall. Then again this week I needed to get a large .iso file into a clients network so I put it on a publicly accessible web server running IIS, and had the problem again.   Solution On the IIS server, open administrative tools > Internet Information...

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