Notes

Came across this blurred departure board in Frankfurt Hauptbahnhof (click to view larger version):

I really have no idea, what happened here. When I took this photo, it was about 16:30 and the board still showed departures from about 6:00 and 8:00. It was the only board affected. The information on the display is blurred. I guess that the display or rather the computer crashed.

Although I prefer Firefox, I really have to admit that the Chromium-based Microsoft Edge is a good browser. Way better than the old Edge (the one with the blue Icon).

Recently we had a problem with Edge not printing anymore. The printing dialogue stayed empty with Edge eventually crashing.

Deleting browser data and a reinstall of Edge did not work. We discovered that this occured only in one certain user profile, so we deleted everything Edge-related from HKCU. This also did not work. Deleting the whole Windows profile was no option, so we decided to export the bookmarks and to delete the folder %localappdata%\Microsoft\Edge. After that, Edge was "fresh" for this user and printing did work again! We re-imported the bookmarks and everything was fine again.

… and not for validating a website's identity!

Seriously, I love Let's Encrypt and the idea of providing free TLS certificates (e.g. for HTTPS) and to automatically renew them. In my opinion, there is no reason not to use it when you just want to secure your traffic using TLS encryption.

I often heard that Let's Encrypt provides "false security" because everyone who owns a domain can create as many certificates as they want, even if your intentions are bad. And the lock symbol in the browser's address bar makes people think that the site is trustworthy.

Yeeeessss… I see the point, but that's not a problem of Let's Encrypt! The purpose of Let's Encrypt is to bring TLS (and thus HTTPS) to the masses! Let's Encrypt allows you to encrypt your traffic using TLS - no more, no less. The purpose is not to prove a website is trustworthy! If you really want to prove that you are a trustworthy and really existing organization, you need a higher validation level. Also domain-validated certificates existed long before Let's Encrypt - Let's Encrypt's certificates are nothing else than automatically validated domain-validated certificates.

Just keep using Let's Encrypt. There is no reason not to do so. Don't let people tell you Let's Encrypt's certificates are no real certificates. If you just want to encrypt traffic using TLS, you're fine.

This happened to me again on a similar server (vMotion fails at 21% with error 195887371). Now I can confirm that the reboot solved the problem.

The strange thing is that it was possible to migrate VMs to the server, but not away from the server.

As an addition to an earlier article, there is another thing that might go wrong when you install MS Office when there is already a preinstalled evaluation version of Office.

Removing the previously mentioned registry key did solve the problem until some Office update brought up the activation window again. The registry key was not back again, so this had to be something different.

I found an article which provided the solution:

Open an elevated command prompt and change to directory C:\Program Files (x86)\Microsoft Office\Office16 (or C:\Program Files\Microsoft Office\Office16 for 64 bit Office).

Execute the following command:

cscript .\OSPP.VBS /dstatus

You get an output like this (yellow lines by me):

The upper part of the output is the Office license installed by me, the lower part the evaluation license which causes the activation window to appear. It states that the evaluation license is expired and gives you the last 5 characters of the product key.

You can now remove the evaluation license (replace khgm9 by your evaluation license key) using these characters:

cscript .\OSPP.VBS /unpkey:khgm9

This finally did the trick.