My website is unavailable after trying to upgrade from Umbraco 7.15.6 to Umbraco 8.1.0

0
votes

I tried to upgrade my website from 7.15.6 to 8.1.0

I used FileZilla to copy /bin and /Umbraco to my host. Then, I edited the web.config as explained here: https://our.umbraco.com/documentation/Getting-Started/Setup/Upgrading/migrating-to-v8

The installation process didn't start and my website is unavailable.

When I tried to rollback to 7.15.6, I now get the following error: Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: The type 'Umbraco.Web.UmbracoApplication' is ambiguous: it could come from assembly 'D:\home\site\wwwroot\bin\umbraco.DLL' or from assembly 'D:\home\site\wwwroot\bin\Umbraco.Web.DLL'. Please specify the assembly explicitly in the type name.

Source Error:

Line 1: <%@ Application Inherits="Umbraco.Web.UmbracoApplication" Language="C#" %> Line 2:

Source File: /global.asax Line: 1

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4261.0

I copied again /bin and /Umbraco to my host (of 7.15.6), as well as the config and App_Plugins folders

How can I bring my website back???

Thakns.

2
umbracoumbraco7umbraco8

2 Answers

0
votes

You should remove umbraco.dll for a start. In fact, all Umbraco DLL's starting with a lowercase 'u' shouldn't be there.

0
votes

You can't do an upgrade from 7 to 8 by copying files as Umbraco 8 contains a lot of breaking changes and a lot of legacy code has been cleaned up compared to Umbraco 7. Due to this, it is not possible to do a direct upgrade from Umbraco 7 to Umbraco 8.

Instead you can migrate your content from your Umbraco 7 site into your Umbraco 8 site after you fresh up a new Umbraco 8 website - again this is not an upgrade!

PS 1: Please use Nuget to install&upgrade your packages.

PS 2: I wrote a blog about my Umbraco V8 "upgrade" from V7 experience a while ago, please take a look. I'm adding the conclusion bit from my blog here, hope it helps.

  • It seems to be Umbraco v8 upgrade from v7 is not really an upgrade, but literally creating a new v8 project, doing the data migration, moving the custom code&settings, and making sure all is good again. You should know that for big projects, this is a lot of work and you need to make sure this is really what you want/need to do.
  • When creating new projects, definitely v8 should be your choice as it is the main focus of Umbraco, and it is the greatest version so far.
  • For v7 projects, I wouldn't recommend you to do a v8 upgrade, unless you have got real good reasons and time(and money to spend for this). Umbraco will continue to support v7 which is great news for all v7 projects.
  • For data migration, writing your own data migration code could be a good option, similar to what Paul Seal did.