1.Backup your site
Before upgrading, if you can, backup your entire site. At a minimum,
backup your web.config.
Once you have backed up your web.config file, there are two ways you can use to extract
the “Install” version over your existing v3.x site.
2.Extract the Install.zip package over your existing version.
3. For DotNetNuke 4.x you must make sure that the Virtual Directory is configured for
.NET2.
4. In addition to the connection String setting under <appSettings> required in
3.x, 4.x also requires the same connection String to be set under the
<connectionStrings> section
name="SiteSqlServer"
connectionString="Data Source=.\SQLExpress;Integrated Security=True;User
Instance=True;AttachDBFilename=|DataDirectory|Database.mdf;"
providerName="System.Data.SqlClient" />
Note that the name of the connectionString “SiteSqlServer” is the same name as
the key used in < appSettings >, and that the < appSettings > setting is also
required to support legacy modules.
5.The machine key settings which were in the < appSettings > settings –
MachineValidationKey, MachineDecryptionKey and MachineValidationMode –
are now in the <machineKey> setting in <system.web>
validationKey="F9D1A2D3E1D3E2F7B3D9F90FF3965ABDAC304902"
decryptionKey="F9D1A2D3E1D3E2F7B3D9F90FF3965ABDAC304902F8D923AC"
decryption="3DES"
validation="SHA1"/>
Ok now I got a few errors during the upgrade process listed here.
This error was when someone try to login it was trying to force a profile update
Just upgraded my dotnetnuke portal from dnn 3.3 to 4.6. Was able to get the site to come up. The problem comes up when i try to login. It wants me to update my profile so i do. Thats when the error comes up.
A critical error has occurred.
Multiple controls with the same ID 'icoName' were found. FindControl requires that controls have unique IDs.
I can login as host succesfully and was able to upgrade all my standard dnn modules to the newest version.
Link were I posted on dotnetnuke.com site
The work around is to go into admin>user accounts>user settings>and disabled Display Manage Services
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