A blog about virtualization, cloud, storage, networking and IT stuff.

The View Agent Direct-Connection (VADC) Plug-In was designed as an extension to the Horizon Agent, which allows a Horizon Client to directly connect to a VM or physical machine withtout using a Horizon Connection Server.

This issue was a bit annoying.

After a reboot, a VMware ESXi 6.7 U3 told me that he has no compatible NICs.

During an vSphere 6.5 > 6.7 update a was host failing continously at the remediation with an “unknown error”.

Public Folders are still a thing.

A customer of mine asked for help to analyse a weird OAuth error.

Six weeks ago, I passed the Microsoft AZ-103 exam and earned the Azure Administrator Associate.

You might got this news some days ago: Starting with September 1, 2020, browsers and devices from Apple, Google, and Mozilla will show errors for new TLS certificates that have a lifespan greater than 398 days.

I’ve got several mails and comments about this topic.

Microsoft Teams got a big push due to the current COVID19 crisis and many of my customers deployed it in the past weeks.

The task was simple: Change the alias and the primary SMTP address of a Microsoft Teams team.

It was a bit quiet here in January caused by a new “private project” which has attracted some resources, and will pull more resources in the future.

This seems to be my last blog post for 2019 and it covers covers objective 2.4 (Build manageability requirements into a vSphere 6.x logical design) of the VCAP6.5-DCV Design exam.

This blog post covers objective 2.3 (Build availability requirements into a vSphere 6.x logical design) of the VCAP6.5-DCV Design exam.

Not every customer is running a full-blown vSphere Enterprise Plus licensing.

If you found this blog post because you are searchting for a solution for a FAN FAILURE on your ProLiant Gen10 HW after applying the latest ESXi 6.7 patches, then use this shortcut for the workaround: Fan health sensors report false alarms on HPE Gen10 Se…

This blog post covers objective 2.2 (Map service dependencies) of the VCAP6.5-DCV Design exam.

Last week I had to setup a small Active Directory Federation Services (ADFS) farm that will be used to allow Single Sign-On (SSO) with Office 365.

Actually, yesterday should be the day at which I migrate one of the last physical Windows vCenter servers installed in my customer base.

The last few weeks have been quite busy.

It is time for some words of wisdom, in regard to Exchange and the supported Active Directory environments.

This issue is described in KB2971270 and is fixed in Exchange 2013 CU6.

Vembu Technologies was founded in 2002, and with 60.000 customers and more than 4000 partners, Vembu is a leading provider with a comprehensive portfolio of software products and cloud services to small and medium businesses.

This blog post covers objective 1.3 (Determine risks, requirements, constraints, and assumptions) of the VCAP6.5-DCV Design exam.

A customer reported a weird problem with his NetScaler Gateway.

This blog post covers objective 1.2 (Gather and analyze application requirements) of the VCAP6.5-DCV Design exam.

This is a situation that never should happen, and I had to deal with it only a couple of times in more than 10y working with VMware vSphere/ ESXi.

Sorry for the long delay since my last blog post - busy times, but with lots of vSphere. :) Today, I did an upgrade of a standalone vCenter Server Appliance at one of my healthcare customers.

THIS IS FIXED in ESXi 6.5 U3 and 6.7 U3.

Using a password safe, or password management system, is not a best practice - it’s a common practice.

When it comes to disaster recovery (DR), dedicated offsite infrastructure is a must.

It is pretty common that vendors offer their products in special editions for SMB customers.

Yesterday, I got one of these mails from a customer that make you think “Ehm, no”.

Implementing a public key infrastructure (PKI) is a recurring task for me.

Today, a customer called me and reported, on the first sight, a pretty weired error: Only Windows clients were unable to login into a WPA2-Enterprise wireless network.

I got this error in a new deployment of Veeam Backup & Replication 9.5 Update 4.

Vembu Technologies was founded in 2002, and with 60.000 customers and more than 4000 partners, Vembu is a leading provider with a comprehensive portfolio of software products and cloud services to small and medium businesses.

Last week, a customer complained that he could not send emails with pictures with the native iOS email app.

To backup a virtual machine, Veeam Backup & Replication needs two permissions: permission to access and backup the VM, as well as the permission to do specific tasks inside the VM to guarantee a consistent backup.

One of my customers bought a very nice new backup solution, which consists of a HPE StoreOnce 5100 with ~ 144 TB usable capacity, and a new HPE ProLiant DL380 Gen10 with Windows Server 2016 as new backup server.

Today I had an interesting support call.

As part of a maintenance job I had to update a 2-node Exchange Database Availability Group and a file-share witness server.

Vembu Technologies was founded in 2002, and with 60.000 customers and more than 4000 partners, Vembu is a leading provider with a comprehensive portfolio of software products and cloud services to small and medium businesses.

In May 2018, Citrix released their new Citrix Certified Expert - Networking certification, which completet the networking certification path at the upper end (blog post on training.citrix.com).

Vembu was founded in 2002 and has over 60,000 customers worldwide.

I was onsite at one of my customers to update a small VMware vSphere 6.0 U3 environment to 6.5 U2c.

While building a small Citrix NetScaler… ehm… ADC VPX (I really hate this name…) lab environment, I noticed that the fan of my Lenovo T480s was spinning up.

I’m using Let’s Encrypt certificates for a while now.

A customer is running their PCs behind their VoIP phones.

I hope that you are not reading this blog post while searching for a solution for a failed cluster.