Hi Lasya

Upgrading is not something that can just be done. Since no Umbraco installation / setup is the same it's hard to be specific about what you need to take into account.

But here are a few

• Are you currently running webforms? (As you probably know it's been possible to choose whether to run Webforms or MVC since Umbraco 4.1.0)
• If you're running webforms do you then rely on some custom user controls? They might need to be rewritten if you're doing postbacks. (But it depends what it does etc.)
• Which 3rd party packages are being used? Are they compatible with Umbraco 7? If not how can you then work around it?
• Be aware that Umbraco 7 is based on Angular so the way you create custom datatypes has changed as well
• Are you using any of the Umbraco API's in some custom code? A lot of the underlying API's has changed from v4 to v6 (And thereby also v7)

I have probably forgot something in the above - But it should be enough to get you started thinking the process through.

Of course you need to make a backup of the database and files before starting the upgrade. I have not tried the tool "Beyond compare" myself but I know that others are very fond of if. Also make sure to install winmerge and then make sure to carefully read through the upgrade documentation as well: http://our.umbraco.org/documentation/Installation/Upgrading/general and http://our.umbraco.org/documentation/Installation/Upgrading/version-specific

In particular the piece about going from 6 to 7 here http://our.umbraco.org/documentation/Installation/Upgrading/v7-upgrade since it's between those 2 versions the biggest changes in the backoffice have been made.

I hope this helps.

/Jan

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