Active Directory Federation Services – Certificate Error ‘CNG Key’
KB ID 0001129 Problem When installing the Active Directory Federation Services Role, you need to supply a certificate. I was running this up using a self signed wildcard certificate when this happened; The certificate with the specified thumbprint {thumbprint} has a Cryptographic Next Generation (CNG) private key. The certificates with the CNG private key are not supported. Use a certificate based on a key pair generated by a legacy...
Certificate Services – Create a ‘Wildcard Certificate’
KB ID 0001128 Problem Now you may be thinking, “If you have your own CA/PKI solution why would you need to create a Wildcard Certificate”? If you can generate as many certificates as you want whats the point? Well today I need to setup ADFS, WAG (Web Application Gateway), and Remote Desktop Services Gateway Server. To make the whole thing wok on my test bench would be a lot less hassle if I could just use one certificate...
Cisco IOS – “configuration not allowed when device is not the primary server for vlan database.”
KB ID 0001127 Problem I was trying to delete a VLAN from a client switch, and this was happening; Core-3560#conf t Enter configuration commands, one per line. End with CNTL/Z. Core-3560(config)#no vlan 30 VTP VLAN configuration not allowed when device is not the primary server for vlan database. Solution Now as far as I was aware there was only one switch, (certainly on this LAN segment anyway). What you need to do is change the VTP...
Migrated WordPress Site – Homepage Works, All Other Pages/Links Fail
KB ID 0001126 Problem I’m in the process of migrating the site back to its original VPS now that the site re-write and redesign has been completed. I used a plugin (UpdraftPlus) to backup the site, and its database, and then restored it to the new server. After the restore I connected to the new server and there was the site in all its glory 🙂 However, every single link I clicked gave me a; Not Found The requested URL {Path}...
Windows 10 – Transparent Command Window
KB ID 0001123 Problem Not really a problem, more of a cosmetic requirement. With Windows 10 you have the option to set your command windows as ‘transparent’ by adjusting their opacity. Solution With a command window open right click the title bar of the windows and select properties > Colours > Adjust the slider. You can also do the same with the PowerShell window. Related Articles, References, Credits, or External...
Windows – ‘Sorry, there was a problem mounting the file’ With ISO Files
KB ID 0001122 Problem Seen on Windows 10, and Server 2012, when attempting to open or mount an ISO file, (even downloaded direct from Microsoft). You get the following error; Note: Can also been seen with .VHD files. Couldn’t Mount File Sorry, there was a problem mounting the file. Solution Before you try anything else simply COPY the iso file to the root of your C: drive, and try again. 99% of the time simply copying the file...
Exchange – Certificate Invalid ‘Revocation Check Failed’
KB ID 0001121 Problem When you check the status of a certificate in Exchange and it it displayed at ‘Invalid’ and the details show that the revocation check has failed. Solution This can happen if your certificate CA has its CRL or OCSP information setup incorrectly, or the Exchange sever simply cannot access them to verify the validity of the certificate. If you are using your own CA the correct way to fix the problem is...
Windows Server 2012 – Add Role Error 0x800f0902
KB ID 0001120 Problem I was setting up a print server yesterday, when I tried to add the print server role it failed with this error; Unable to obtain feature list error 0x800f0902 Solution Internet searching was pointing to a problem with the ‘Task Scheduler Service’ and suggested stopping that, which I was unable to do. It turns out my server had just finished Windows updates, and needed to reboot, (it was a new...
Windows Server 2012 R2 – Stop IE Opening ‘In Metro’
KB ID 0001119 Problem I was working on some Server 2012 R2 servers this morning, and every time I tried to launch IE, instead of the normal IE 11, it stubbornly kept opening the the IE App. Solution Hit the Windows key > Type in ‘internet options’ > make the following changes; Programs Tab > Opening Internet Explorer > Select ‘Always in Internet Explorer on the desktop’ > Apply > OK. Related...
Cisco ASA – Active / Active Failover
KB ID 0001114 Usually when I’m asked to setup Active/Active I cringe, not because its difficult, its simply because people assume active/active is better than active/standby. I hear comments like ‘we have paid for both firewalls lets use them’, or ‘I want to sweat both assets’. The only real practical use cases I can think of for Active /Active are; You have a multi-tenancy environment and want to offer...