Problem upgrading to 8.17.1

Hello eveyrone,

I have problems with an upgrade to version 8.17.1.
I have installed the upgrade via nuget.
When I start the project now, the backend still shows me version 8.12.1. When I start the project, there is also no indication that the database has been updated, as is usually the case.

In my web.config there is still this key

<add key="Umbraco.Core.ConfigurationStatus" value="8.12.1" />

When I try to change it manually, I get an error:

[BootFailedException: Boot failed: Umbraco cannot run. See Umbraco's log file for more details.

-> Umbraco.Core.Exceptions.BootFailedException: Local version "8.17.1"     > code version "8.12.1", downgrading is not supported.
       bei                     Umbraco.Core.RuntimeState.DetermineRuntimeLevel(IUmbracoDatabaseFactory databaseFactory)
       bei     Umbraco.Core.Runtime.CoreRuntime.DetermineRuntimeLevel(IUmbracoDatabaseFactory databaseFactory, IProfilingLogger profilingLogger)
   bei Umbraco.Core.Runtime.CoreRuntime.Boot(IRegister register, DisposableTimer timer)]
       Umbraco.Core.Exceptions.BootFailedException.Rethrow(BootFailedException bootFailedException) +339

Thank you


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/108050-problem-upgrading-to-8171