ASP & ASP.NET

503 The service is unavailable
The 503 error is often caused by a crash in your application pool or insufficient resources – restart the pool or upgrade your hosting package.
ASP components
We provide ASP components such as ASPTear, w3 JMail, w3 Sockets, aspSmartUpload and Persits tools such as AspUpload, AspXUpload, AspJpeg, AspPDF and ASPEmail.
Connection to MS Access with ASP
How to create an ADO connection to an Access database in ASP with Provider=Microsoft.ACE.OLEDB.12.0.
Connection to MSSQL with .NET
How to create a connection to an MSSQL database in .NET using a connectionString in web.config.
Connection to MySQL with .NET Connector
Code example of connecting to MySQL via .NET Connector, and fix for the 'SELECT command denied' error via Use Procedure Bodies=false in the connection string.
Connection to MySQL with ASP
How to create a MySQL connection in ASP with an ADO connection string and select the OPTION value
Custom error pages
On ASP webhosting plans, you can set up custom error pages via the web.config file with customErrors or through IIS Manager, e.g. for 404 and 500 errors.
Deploy .NET with Self-contained deployment (SCD)
Guide to publishing a .NET app on Simply.com: select Web Deploy, set Deployment Mode to Self-contained and Target Runtime to win‑x86.
IIS Manager
IIS Manager provides graphical control, login, error fixing, pool recycling and folder conversion.
Multiple ASP.NET Core / 5+ apps on the same web hosting
Switch to OutOfProcess hosting in the csproj file or web.config, so you can run multiple ASP.NET Core/5+ apps on the same webhosting.
Paths & folders
Find the path to your root folder, see which default pages the ASP server uses, and read about write access – permissions cannot be changed with CHMOD via FTP.
Restart application pool
Restarting a Windows Application Pool removes hanging processes and frees up resources, but briefly interrupts active sessions.
Send mail with JMail component
How to send email with JMail via websmtp.simply.com in classic ASP.
Setting up and changing MIME types
How to change MIME types on your server via web.config or IIS‑Manager
What type of server does ASP run on?
ASP is hosted on Windows servers with access to ASP.NET (up to .NET 4.8), Access databases and popular ASP components.