Cannot install the Certificate Authority Web Enrollment component
I have recently been faced with a Certificate Authority server running on Microsoft Windows 2008 R2 that was refusing to have the Web Enrollment component installed.
I have tried installing by the GUI and using powershell using add-windowsfeature ADCS-Web-Enrollment and both method failed with the following error
"Certification Authority Web Enrollment cannot be installed on this computer or Error: Cannot install Certification Authority Web Enrollment."
The solution to this problem is
- Run regedit on the server
- Browse to HKLocalMachine\System\CurrentControlSet\Services\CertSvc\Configuration
- Change the SetupStatus key to 0×6001 (it was 0x6003 in my case)
Et voila you should be able to install the web enrollment now without issues
DCPromo out fails with: The directory service is missing mandatory configuration information, and is unable to determine the ownership of floating single-master operation roles.
While trying to demote, dcpromo out, a domain controller the operation might fail with the following error
"The directory service is missing mandatory configuration information, and is unable to determine the ownership of floating single-master operation roles."
As you can notice, in my case, the partition at problems was DC=ForestDnsZones,DC=domain,DC=int.
You get “Iashlpr initialization failed” error after installing DHCP on Windows 2008R2
After installing DHCP server on windows 2008 R2, you notice that your system event log will be filled with Errors Event ID: 1070 “Iashlpr initialization failed: The DHCP service was unable to access path specified for the audit log. So DHCP server cannot talk to NPS server. It could be that IAS service is not started.”
Event ID: 1070
Source: DHCP-ServerIashlpr initialization failed: The DHCP service was unable to access path specified for the audit log. So DHCP server cannot talk to NPS server
At first I have ignored this error since it wasn’t affecting my DHCP Server behavior, everything was working fine, and clients were obtaining proper IP addresses and network settings.
Until I had to configure WPAD entry in order to enable TMG Firewall Client to automatically detect the TMG server. TMG clients were failing to automatically detect the TMG Server, I start troubleshooting the issue, I tried everything add/remove the WPAD entry, changing the WPAD value, etc… but all my trials were unsuccessful.
How to Flush DNS cache (Windows/MAC/Linux)
DNS cache, although very useful in normal time, can become very annoying when all you want is to get rid of it to initiate a fresh query.
Here is how to clear the DNS cache on each of Microsoft Windows, Mac OS and Linux Operating Systems
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