Articles about .NET, Azure, cloud development, and more. Tips, tutorials, and best practices.https://simonholman.dev/en-auhttps://simonholman.dev/blog/change-email-server-settings-pop3-imap/https://simonholman.dev/blog/change-email-server-settings-pop3-imap/A step-by-step guide to finding and changing incoming and outgoing email server settings on Outlook, Mac Mail, iPhone and Android devices.Thu, 22 Jan 2026 00:00:00 GMTDevelopmentemailoutlookimappop3smtphttps://simonholman.dev/blog/shipping-more-code-than-ever-with-ai-assisted-development/https://simonholman.dev/blog/shipping-more-code-than-ever-with-ai-assisted-development/I built two applications over the Christmas break without writing a single line of code. Here's how I did it with Claude Opus 4.5 in VS Code.Tue, 06 Jan 2026 00:00:00 GMTDevelopmentAIProductivityVS CodeBlazorElectronAstroMVChttps://simonholman.dev/blog/add-dataannotations-metadata-to-ef-core-in-a-partial-class/https://simonholman.dev/blog/add-dataannotations-metadata-to-ef-core-in-a-partial-class/If you're old like me, and can remember back to the old days of LINQ to SQL and early Entity Framework with .NET Framework, then you'll likely remember usingFri, 15 Nov 2024 00:00:00 GMTDatabasehttps://simonholman.dev/blog/office-365-dkim-setup/https://simonholman.dev/blog/office-365-dkim-setup/DKIM (DomainKeys Identified Mail) is like a digital signature for emails that proves an email really came from who it claims to be from.Fri, 15 Nov 2024 00:00:00 GMTDNShttps://simonholman.dev/blog/debug-azure-functions-webhook-callbacks-with-dev-tunnels/https://simonholman.dev/blog/debug-azure-functions-webhook-callbacks-with-dev-tunnels/Using Dev Tunnels to test your Azure Functions webhook callbacks is a breeze.Fri, 15 Nov 2024 00:00:00 GMTAzure Functionshttps://simonholman.dev/blog/sending-email-from-azure-functions-with-sendgrid/https://simonholman.dev/blog/sending-email-from-azure-functions-with-sendgrid/Azure Functions is the perfect tool for sending emails from websites and apps. It's lightweight, fast, and scalable. Add SendGrid to it and you have a matchWed, 15 May 2024 00:00:00 GMTAzure Functionshttps://simonholman.dev/blog/configure-serilog-for-logging-in-azure-functions/https://simonholman.dev/blog/configure-serilog-for-logging-in-azure-functions/Even though the built-in logging in .NET Core is pretty good these days, Serilog takes it to the next level, making complex logging exceptionally easy.Mon, 15 Jan 2024 00:00:00 GMTAzure Functionshttps://simonholman.dev/blog/creating-a-database-on-azure-sql/https://simonholman.dev/blog/creating-a-database-on-azure-sql/Spinning up a database on a managed SQL server with variable resources per database is heavenly. Creating a database on Azure SQL is very quick and easy to do.Mon, 15 Jan 2024 00:00:00 GMTAzurehttps://simonholman.dev/blog/creating-a-dmarc-record-for-your-domain/https://simonholman.dev/blog/creating-a-dmarc-record-for-your-domain/Google and Yahoo have both announced a new set of requirements that senders must meet. Creating a DMARC record for your domain is key to proper domain security.Mon, 15 Jan 2024 00:00:00 GMTDNShttps://simonholman.dev/blog/no-job-functions-found-after-azure-functions-upgrade/https://simonholman.dev/blog/no-job-functions-found-after-azure-functions-upgrade/No job functions found. Try making your job classes and methods public. If you're using binding extensions make sure you've called the registration method for tMon, 15 Jan 2024 00:00:00 GMTAzure Functionshttps://simonholman.dev/blog/practical-tips-on-how-i-achieved-45-percent-savings-on-my-microsoft-azure-billing/https://simonholman.dev/blog/practical-tips-on-how-i-achieved-45-percent-savings-on-my-microsoft-azure-billing/About 18 months ago, I took over a product that was fully run on Azure. The solution costs had ballooned from $2000/month at its inception, to almostMon, 15 Jan 2024 00:00:00 GMTAzurehttps://simonholman.dev/blog/error-sending-email-via-sendgrid-from-azure-functions/https://simonholman.dev/blog/error-sending-email-via-sendgrid-from-azure-functions/System.Private.CoreLib: Exception while executing function: Functions.SendEmail. Microsoft.Azure.WebJobs.Extensions.SendGrid: A 'To' address must be specified fFri, 15 Dec 2023 00:00:00 GMTAzure Functionshttps://simonholman.dev/blog/getting-started-with-azure-public-dns-zones/https://simonholman.dev/blog/getting-started-with-azure-public-dns-zones/Learn how to manage DNS for your domains with Azure Public DNS zones. Build on top of Azure's services for seamless integration.Fri, 15 Dec 2023 00:00:00 GMTAzurehttps://simonholman.dev/blog/manage-your-microsoft365-domains-with-amazon-route-53-hosted-zones/https://simonholman.dev/blog/manage-your-microsoft365-domains-with-amazon-route-53-hosted-zones/In this post, we'll take a look at adding a domain to Microsoft365 and configuring your DNS records with an Amazon Route 53 DNS.Fri, 15 Dec 2023 00:00:00 GMTDNShttps://simonholman.dev/blog/manage-your-microsoft365-domains-with-azure-dns-zone/https://simonholman.dev/blog/manage-your-microsoft365-domains-with-azure-dns-zone/In this post, we'll take a look at adding a domain to Microsoft365 and configuring your DNS records with an Azure DNS Zone.Fri, 15 Dec 2023 00:00:00 GMTDNShttps://simonholman.dev/blog/manage-your-microsoft365-domains-with-cloudflare-dns/https://simonholman.dev/blog/manage-your-microsoft365-domains-with-cloudflare-dns/In this post, we'll take a look at adding a domain to Microsoft365 and configuring your DNS records with Cloudflare DNS.Fri, 15 Dec 2023 00:00:00 GMTDNShttps://simonholman.dev/blog/resetting-a-dotnetnuke-host-user-password/https://simonholman.dev/blog/resetting-a-dotnetnuke-host-user-password/A frequent question asked by customers is how to reset the DotNetNuke Host users password if you can’t remember what it is. If you have access to the database tFri, 15 Dec 2023 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/should-you-use-caching-for-speed/https://simonholman.dev/blog/should-you-use-caching-for-speed/I've seen countless videos and articles talking about adding caching to your ASP.NET website or API in order to "speed it up".Fri, 15 Dec 2023 00:00:00 GMTWeb Developmenthttps://simonholman.dev/blog/sendgrid-account-setup-and-domain-verification-with-azure-dns/https://simonholman.dev/blog/sendgrid-account-setup-and-domain-verification-with-azure-dns/If you're wanting to send email from your application, then Sendgrid is a fantastic provider that makes it easy (and potentially free) to get up and going.Fri, 15 Sep 2023 00:00:00 GMTAzurehttps://simonholman.dev/blog/using-redis-caching-in-your-asp-net-core-web-app/https://simonholman.dev/blog/using-redis-caching-in-your-asp-net-core-web-app/Welcome back! In our previous videos, we covered the installation of Ubuntu on Windows 11 and explored how to install Redis Server on that Ubuntu instance.Thu, 15 Jun 2023 00:00:00 GMTWeb Developmenthttps://simonholman.dev/blog/install-redis-server-cache-on-ubuntu-running-on-windows-11/https://simonholman.dev/blog/install-redis-server-cache-on-ubuntu-running-on-windows-11/In a previous video we looked at how to install Ubuntu Linux using the Windows subsystem for Linux on Windows 11, and now we're going to look at how to use thatFri, 15 Jul 2022 00:00:00 GMTLinuxhttps://simonholman.dev/blog/installing-ubuntu-on-windows-11-using-the-windows-subsystem-for-linux-wsl/https://simonholman.dev/blog/installing-ubuntu-on-windows-11-using-the-windows-subsystem-for-linux-wsl/Hi folks, welcome back to another video. In this video, we're going to take a look at installing Ubuntu, a Linux distribution, on Windows 11 using the WindowsFri, 15 Jul 2022 00:00:00 GMTWindowshttps://simonholman.dev/blog/ignore-azure-function-false-positive-dependency-failures-using-telemetryinitializers/https://simonholman.dev/blog/ignore-azure-function-false-positive-dependency-failures-using-telemetryinitializers/Let me start by saying that I love Appication Insights. The level of detail it gives you out of the box to monitor and troubleshoot application issues isMon, 15 Jun 2020 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/handling-new-user-registration-with-auth0-and-asp-net-core-3/https://simonholman.dev/blog/handling-new-user-registration-with-auth0-and-asp-net-core-3/When creating a new site that will have users logging into it, you'll invariably have to choose an identity provider to use. You can use the the inbuiltMon, 15 Jun 2020 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/errors-backing-up-vm-using-dpm-2016/https://simonholman.dev/blog/errors-backing-up-vm-using-dpm-2016/Issue:Tue, 15 Oct 2019 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/error-0x800f0954-installing-net-3-5-on-windows-10/https://simonholman.dev/blog/error-0x800f0954-installing-net-3-5-on-windows-10/If you're experiencing error 0x800F0954 when trying to install .NET 2.0 and 3.5 on Windows 10, and you're in a domain environment, then a simple temporarySun, 15 Sep 2019 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/azure-functions-not-showing-all-executions-under-monitoring/https://simonholman.dev/blog/azure-functions-not-showing-all-executions-under-monitoring/I recently deployed a very simple Azure Functions 2.0 project from Visual Studio 2019 that contained a single timer triggered function. The function had a dailySat, 15 Jun 2019 00:00:00 GMTAzurehttps://simonholman.dev/blog/importing-a-csv-file-into-azure-sql-with-azure-functions/https://simonholman.dev/blog/importing-a-csv-file-into-azure-sql-with-azure-functions/Importing CSV files into Azure SQL is quick and easy using Azure Functions.Sat, 15 Jun 2019 00:00:00 GMTAzurehttps://simonholman.dev/blog/lower-case-urls-in-asp-net-core/https://simonholman.dev/blog/lower-case-urls-in-asp-net-core/Common url casing in your urls, in my opinion, makes your site look nicer as a whole and has significant SEO benefit to help you drive trafiic to your site.Mon, 15 Apr 2019 00:00:00 GMTWeb Developmenthttps://simonholman.dev/blog/preview-a-website-before-changing-dns-without-a-temporary-url/https://simonholman.dev/blog/preview-a-website-before-changing-dns-without-a-temporary-url/Setting up a new website on a new server or with a different hosting provider while the existing website is still live presents some challenges.Mon, 15 Apr 2019 00:00:00 GMTTechnicalhttps://simonholman.dev/blog/implementing-asp-net-core-session-with-redis-cache-on-azure/https://simonholman.dev/blog/implementing-asp-net-core-session-with-redis-cache-on-azure/Using Redis cache in Windows Azure to save session state for an ASP.NET Core web app is quick and easy to configure.Fri, 15 Mar 2019 00:00:00 GMTWeb Developmenthttps://simonholman.dev/blog/visual-studio-code-finally-has-a-tree-indent-setting/https://simonholman.dev/blog/visual-studio-code-finally-has-a-tree-indent-setting/Microsoft have added an option to Visual Studio Code that allows you to adjust the indentation level in the folder treeview.Fri, 15 Feb 2019 00:00:00 GMTTechnical