My brother-in-law has a problem with his Windows 7 laptop. He continually sees the pop-up error message, “Windows Explorer has stopped working”, and the desktop would flicker (killing all file explorer windows) as Windows restarts the process. He cannot do anything productive with the malfunctioning machine. He asks me to…
Leave a CommentChanh Vuong Posts
To perform a clean installation of macOS Sierra (basically, Mac OS X 10.12), I recommend using a bootable USB flash drive containing the macOS Sierra installer. Below are the steps I took to create the bootable USB flash drive and how I used it to install macOS Sierra. Note: The…
Leave a CommentUpdate: Cleverloop went out of business late 2019. Because the system uses a cloud service, the app stopped working. I recommend getting a video surveillance system from a large company, like Blink or Ring from Amazon, which won’t die all of a sudden. Final Verdict: I do not recommend the…
2 CommentsI had tried out Windows 10 by installing it on a second, bigger 500GB SSD (Solid State Drive) than my existing Windows 7’s 240GB SSD. Having determined that I wanted to permanently move to Windows 10, I decided to move Windows 10 to the smaller drive, overwriting Windows 7. First,…
2 CommentsAs a web developer, have you ever asked yourself whether to use a period or a plus sign to concatenate two strings? The former is used by PHP and the latter by Javascript. If you switch between the frontend Javascript and the backend PHP languages often, you’ll find yourself asking…
Leave a CommentUpdate: I’ve provided updated instructions using the latest Let’s Encrypt Certbot app at Ubuntu 24.04 LTS and WordPress From Scratch under section “Configure Secure HTTPS Access”. The latest Certbot will automatically modify the Nginx server block file and schedule the renewal task. See my previous post in the unmanaged VPS…
Leave a CommentIn the past, whenever I needed a web server on Windows, I would install the XAMPP distribution (comes with Apache, PHP, and MySQL) and call it a day. This time, I wanted to use Nginx instead of Apache as the web server. Below are the steps I took to install…
16 CommentsI downloaded a HTML5 and Javascript demo. When I attempted to browse to it, I encountered the infamous “XMLHttpRequest cannot load file:///” error. The latest Chrome (and other modern browsers) won’t allow cross domain (a.k.a. cross origin) communication, which would occur when a page from one website domain attempts to…
Leave a CommentSee my previous post, Subversion Over SSH on an Unmanaged VPS, to learn how to set up Subversion on Ubuntu (running on a DigitalOcean VPS). In this post, we will learn how to create a script to backup the WordPress database and copy it from the server to our local…
Leave a CommentHave you ever taken a vertical portrait video using your iPhone, import it to your computer, find that Windows Media Player will play it horizontally, and gotten a neck crick from holding your head sideways? Since the beginning, vertical portrait videos (tall and skinny) have been unwanted and unsupported, living…
1 Comment