Yes, you are right :-) But i have to know a little bit more about Claims migration first.

HI, Here is how i did an successfully upgrade from Sharepoint 2010 to Sharepoint2013, step by step: 1. Create new Sharepoint Farm 2. Delete the created webapplication and Contentdatabase on port 80 3. Restore theese databases from Sharepoint 2010, to your new SQLserver ( i use SQLserver 2012, also this could have been done before this installation :-) ): - All Content databases for all webapplications, - Secure Store Service database, - Managed Metadata Service database, - User Profile Service database 4. Create theese 3 Service Application and Proxy with Powerscript: - Secure Store Service database, - Managed Metadata Service database, - User Profile Service database Use this commando: New-SPSecureStoreServiceApplication and New-SPSecureStoreServiceApplicationProxy ( if you want, i can give you the total script ) ( also remember to use the original databasename you restored ) 5. Delete the 3 old Service Application and databases 6. Create your new webapplications with powerscript, use this command: ( Notice i do not use the new Claims Based Authentification ) New-SPWebApplication -Name 'SharePoint - 80' -ApplicationPool 'SharePoint - 80' -AuthenticationMethod 'NTLM' -ApplicationPoolAccount 'Domain\user' -Port '80' -URL 'http://moss2013test:80' 7. Delete the created Contentdatabase for all webapplication 8. Attach old Contentdatabase that you restored from your Sharepoint 2010 9. Upgrade all Sitecollections, i did it with this command: get-spsite -contentdatabase 'You Contentdatabase Name' -limit all | upgrade-spsite -versionupgrade 10. Import encryption key from your old Sharepoint 2010. Open a CMD prompt as ADMINISTRATOR, and type this command: "C:\Program Files\Microsoft Office Servers\15.0\Synchronization Service\Bin\miiskmu.exe" /i "Path to you key file" {0E19E162-827E-4077-82D4-E6ABD531636E} 11. Reset IIS 12. Start User Profile Sync. Service 13. Setup MY site 14. Setup Search from Central Administration gui 15. Enable features on existing sites ( Enterpris Features ) under "Upgrade and Migration" 16. Copy you layout modifications from your old Sharepoint 2010, i copied this folder: C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\Foldername 17. Run a full Userprofile Sync. and compile your audiences 18. Restart your Sharepoint and SQL Server Thats all folks :-) Of course you have to check the upgrade logs under: C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\LOGS Please let me know if you want the scripts i used. BR Pettsen and have a nice Christmas and a happy new year.

There are limitations when using Classic mode (e.g. Office Web Apps), so I'd strongly suggest performing a Claims migration.SharePoint - Nauplius Applications Microsoft SharePoint Server MVP MCITP: SharePoint Administrator 2010

Yes, you are right :-) But i have to know a little bit more about Claims migration first.