Installing Azure ATP Sensor… failed with 0x80070643

Another “short and sweet” one! ?

I was installing a couple of Microsoft Defender for Identity (a.k.a. Azure Advanced Threat Protection, or Azure ATP) sensors, on Domain Controllers behind corporate proxies.

Everything went well on all of them… but the last one, of course!

Every other picked up the system proxy settings and installation went fine, but the last one failed… with a highly descriptive error saying “Installation failed. Error code: 0x80070643“:

It seems that this installation hasn’t picked up the system’s proxy settings (for whatever reason), and this information needed to be set manually during the installation.

So, after downloading and unpacking the Azure ATP Sensor installation, open Command Prompt (as Administrator, of course) and, from its folder, run this command (make sure you enter your proxy information and the right access key):

Hope it helps (helped me)! If it doesn’t, try reading this thread.


NetScaler, XenMobile and SSL certificates

So, you’ve finally decided to make yourself “a small Citrix lab” (XenMobile and NetScaler), but you’re having trouble with getting all the certificates in place. Fear not, I’m here to help!

Installing the SSL certificates for NetScaler is relatively simple, but still… some steps are easily forgotten and then… you need to troubleshoot. Smile

Steps to install the SSL certificate for NetScaler (correctly) are:

  1. Install the server certificate (for example, certificate for The easiest way is to use .PFX certificate file, and you can install it through Traffic Management – SSL – Certificates – Server Certificates.
  2. Install the issuing and root CA’s certificates (.PEM files are OK) through Traffic Management – SSL – Certificates – CA Certificates.
  3. Create link (right click – Link) between the server certificate and issuing CA’s certificate.
  4. Create link (right click – Link) between the issuing CA’s certificate and root CA’s certificate.
  5. Check the certificate links on issuing CA’s certificate (right click – Certificate links). There should be two – one linking the server certificate, another the root certificate.
  6. Select the imported certificate for NetScaler Gateway usage.
  7. Select the imported certificate for (SSL) virtual servers as well. If you’re using NetScaler appliances in HA mode, force synchronization.
  8. Check if certificates are installed properly (for example, by opening the MAM interface with your browser – or
  9. Check if certificate chain is in order as well –

For XenMobile Server, there is some preparation work to do, to get it all right. Basically, you’ll need to combine all the (.PEM) certificate files into one, upload that to XenMobile Server, and restart.

Steps are:

  1. Combine individual (.PEM) certificate files (server, issuing and root CA) into one .PEM file by following instructions on this DigiCert site (you can use Notepad to achieve this). Your final .PEM file should look like this:
    (server_certificate.pem content)

    (issuing_ca_certificate.pem content)

    (root_ca_certificate.pem content)

  3. Upload the combined (.PEM) certificate file to XenMobile Server.
  4. Restart all the XenMobile Server nodes (one by one).
  5. Check if nodes picked up the certificate change (for example, by opening the XenMobile Server management interface with your browser – https://{node’s_IP_address}:4443).
  6. Check if certificate chain is in order as well –

And… that’s it!

Oh, yeah – in case you’ve been living under a rock… don’t use the SHA-1 certificates anymore… they are obsolete now (info). Smile