Upgrade UniFi Controller as a service


Ubiquiti provides instructions here for running the UniFi Controller as a service. What they don’t tell you is that when you try to upgrade the controller, you can’t, because the service is still running. Here are the instructions for that:

1. Back up your config from Settings > Maintenance > Download Backup.  If that doesn’t work from remote access, try it from a browser on the LAN.  If _that_ doesn’t work, go to Settings > Auto Backup and download the most recent backup.

2. On the server running the controller, open an administrative Command Prompt.  Stop the UniFi Java service:

cd "%UserProfile%\Ubiquiti UniFi\"
java -jar lib\ace.jar stopsvc

3. Overinstall the new controller (run UniFi-installer.exe).  On the last page of the install wizard, check “Start UniFi Controller after installation”.

4. In the small window that opens, wait until it says “UniFi Controller (x.xx.xx) started”:


Close the window (do not launch browser).

5. Back at the administrative Command Prompt, install and start the service:

java -jar lib\ace.jar installsvc
java -jar lib\ace.jar startsvc

6. Test access from a brows

How to download embedded videos with F12 Tools in your browser

From: https://www.hanselman.com/blog/HowToDownloadEmbeddedVideosWithF12ToolsInYourBrowser.aspx

I got an email this week asking how to download some of my Azure Friday video podcast videos from http://friday.azure.com as well as some of the Getting Started Videos from Azure.com.

NOTE: Respect copyright and consider what you’re doing and WHY before you use this technique to download videos that may have been embedded for a reason.

I told them to download the videos with F12 tools, and they weren’t clear how. I’ll use an Azure Friday video for the example. Do be aware that there are a ton of ways to embed video on the web and this doesn’t get around ones that REALLY don’t want to be downloaded. This won’t help you with Netflix, Hulu, etc.

First, I’ll visit the site with the video I want in my browser. I’ll use Chrome but this also works in Edge or Firefox with slightly different menus.

Then press F12 to bring up the Developer Tools pane and click Network. In Edge, click Content Type, then Media.

Download embedded videos with F12

Click the “clear” button to set up your workspace. That’s the International No button there in the Network pane. Now, press Play and get ready.

Look in the Media list for something like “.mp4” or something that looks like the video you want. It’ll likely have an HTTP Response in the 20x range.

Download 200

In Chrome, right click on the URL and select Copy as CURL. If you’re on Windows pick cmd.exe and bash if you’re on Linux/Mac.

Downloading with CURL

You’ll get a crazy long command put into your clipboard. It’s not all needed but it’s a very convenient feature the browser provides, so it’s worth using.

Get Curl: If you don’t have the “curl” command you’ll want to download “curl.exe” from here https://curl.haxx.se/dlwiz/ and, if you like, put it in your PATH. If you have Windows, get the free bundled curl version with installer here.

Open a terminal/command prompt – run cmd.exe on Windows – and paste in the command.


BEFORE you press enter, make sure you add “-o youroutputfilename.mp4.” Also, if you can an error about security and certificates, you may need to add “–insecure.”

Downloading a streaming video file with CURL

In the screenshot above I’m saving the file as “test.mp4” on my desktop.

There are several ways to download embedded videos, including a number of online utilities that come and go, but this technique has been very reliable for me.

Retain multi-line cells when pasting Word table into Excel



In Word, select the table.

Press Ctrl+H to activate the replace dialog.

Enter ^p in the Find what box.

Enter some text that doesn’t occur otherwise in the Replace with box, for example @@@@.

Click Replace All and don’t allow it to continue beyond the table.

Close the Replace dialog.

Copy / paste the table into Excel.

Press Ctrl+H to activate the replace dialog.

Enter @@@@ (or whatever you used in Word) in the Find what box.

Press Alt+0010 in the Replace with box.

Click Options >> and make sure that the “Match entire cell contents” check box is clear.

Click Replace All.

You may have to format the cells to wrap text.

Analyze a Windows Error Code


1. Use the Windows Calculator app in Programmer mode to convert 2147942667 to hex to get 0x8007010B:

Windows Error Analysis

2. According to Hans, the “7” in 0x8007010B makes it a Windows error, which makes 0x010B the error code. (Basically, just look at the last four bytes.) Converted back to decimal, 0x010B is 267. MSDN tells us that this means, “The directory name is invalid.”

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