How to update DpeNanoServices (Windows)

This page guides you step by step through the easiest and quickest way to update a DPE Nano Services Installation.

Current Situation

• DpeNanoServices is running as a windows service with the service name DpeNanoServices,
  e.g. from C:\MyDpeNanoServices

• The new version of DpeNanoServices delivered by DAVID Systems is copied to a local temporary folder
  e.g. C:\Temp\20251204_DpeNanoServices_1.4.49

• A command-line terminal with Administrator privileges is open and the current directory in the terminal is changed to the folder of the new version

Update

Enter the following command

DpeNanoServices /update

or if your service installation uses a different name, e.g. NanoTest instead of the default DpeNanoServices

DpeNanoServices /update=NanoTest

This will do everything for you

• It creates a new folder in parallel to the currently executing DpeNanoServices, taking the existing folder name and postfixing the name with the new version and a timestamp,
  e.g. C:\MyDpeNanoServices.1_4_49_20251204113635

• It copies the files of the new version to this folder

• It copies some files of the currently running DpeNanoServices to this folder, e.g.
  the file appsettings.json
  the file StartupScript.bat
  the folder Features which contains the DPE licenses
  the folder wwwroot

• It starts DpeNanoServices from the new folder in a warmup mode and stops it after a few seconds. This will decrease the downtime when switching execution from old to new version

• It changes the service registration (binPath) to refer to the new folder. All command-line parameters for the service registration are kept

• The folder with the previous DpeNanoServices remains unchanged

• NOW THE SWITCHING STARTS

• It stops the currently executing service

• It starts the service from the new folder

• The switching normally takes less than 2 seconds