SqlException 0x80131904 : Connection Timeout Expired

If you receive the following error:


Microsoft.Data.SqlClient.SqlException (0x80131904): Connection Timeout Expired. The timeout period elapsed during the post-login phase


Then this could be because the database you are connecting to is not on a high-enough tier.

When restoring a bacpac to Azure, you can select the tier of the database. Leaving it as standard (s0) results in the database being restored with the following settings:


These are often not enough to do large operations on, such as Obfuscate. Instead, ensure your scaling settings look like this:


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