Licensing 1.9.0 and build performance

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Last Updated: 03 Sep 2026 06:14 by ADMIN

Andreas

Created on: 19 Aug 2026 13:35

Category: UI for Blazor

Type: Bug Report

Licensing 1.9.0 and build performance

We have a Blazor project that normally takes 20 seconds to build.

But after upgrading Telerik.Licensing from 1.8.2 to 1.9.0/1 the build takes about 60 seconds.

First we upgraded all telerik references with this effect. Now we downgraded all to the version that is supported by 1.8.2.

In the project, the only change I make is to change the version from 1.8.2 to 1.9.0 or later, then the build goes from 20 seconds to 60 seconds, no other changes made...

I have tried Rebuild, Restarts etc...

In the build detailed output, it is the csc command that takes longer times.

4 comments

ADMIN

Dimo

Posted on: 03 Sep 2026 06:14

Hello Karl and everyone,

Yes, we just released version 1.9.2 of the Telerik.Licensing package with performance optimizations. Please remove the <Target> workaround from the project file(s) and test the app build performance.

If the problem persists, then there must be an issue, which is triggered by a specific app (configuration or code in it) and/or a specific environment. In this case, we will have to receive additional information about them, so that we can reproduce and troubleshoot the problem on our side.

Regards,
Dimo
Progress Telerik

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Karl

Posted on: 02 Sep 2026 17:14

Hey @Dimo,
I see today there is a new Telerik.Licensing 1.9.2 available on NuGet - but the change log here has not been updated since 1.8.0: https://www.nuget.org/packages/Telerik.Licensing/#readme-body-tab

Is this 1.9.2 update supposed to fix this issue? And should we revert the project file change when we apply this?

Andreas

Posted on: 19 Aug 2026 14:33

Thanks, that helped!

ADMIN

Dimo

Posted on: 19 Aug 2026 14:27

Hello Andreas,

Indeed, we are aware of the issue and are working on it. Please add the following markup to your project file as a workaround:

  <Target Name="DisableTelerikLicensingAnalyzer" BeforeTargets="CoreCompile">
    <ItemGroup>
      <Analyzer Remove="@(Analyzer)" Condition="'%(Filename)' == 'Telerik.Licensing.Analyzer'" />
    </ItemGroup>
  </Target>

Regards,
Dimo
Progress Telerik

Love the Telerik and Kendo UI products and believe more people should try them? Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher.