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We have several sites running on Umbraco 4.0
We now want to upgrade it the latest version i.e. 4.7
can someone please let me know what is involved in upgrading and how to go about this, any documentation will be very helpful
Many many thanks in advance.
Hope this thread may give some pointers.
In my experience the best upgrade path from 4.0.x is to 4.5.2, and then 4.7.0, followed by 4.7.1 (recommended if you want to start using razor).
Here's a link to a small guide I've written and updated for several upgrades:
Upgrading from 4.8 to 4.9 Umbraco. I have followed the steps above, but got the installation wizard rather than the upgrade wizard.
Am currently getting this error:
Message Cannot add duplicate collection entry of type 'add' with unique key attribute 'key' set to 'umbracoDbDSN'
PreviousLine <add key="umbracoDbDSN" value="server=srv-portal1;database=minnpocumbraco;user id=adminrl;password=MIN-NS5-15-12" />
ErrorLine <add key="umbracoDbDSN" value="" />
NextLine <add key="umbracoConfigurationStatus" value="" />
Any help would be appreciated,
According to the error your web.config has two duplicate appSettings - you should delete the second one listed under ErrorLine (<add key="umbracoDbDSN" value="" /> )
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