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i install fresh k2+sqlum  , start server fine.

 then copy k2, k2log,  k2sqlum from other server , change license and start fail.

it say : SQL User manager :the  ConnectionString not initialized

 k2Sever.exe.config already has ConnectionString property

You will also need to update the SQL UM settings saved in the database. The steps to do so:
1. In the K2Log database, open the _Setting table.
2. Ensure that the Value column for the UMData field has the correct Connection information to your SQL UM database.
3. Restart the K2 Server and verify.

lol ,your reply is exactly same as K2's support reply. Never know supporter also contribute here.

 my _settings is correct. at last  I fix by intsall   K2SQLUM over k2 then copy K2SQLUM db from other host override it.


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