I gatting below error i did the same thing what you toldChanged settings forces a full rebuild.Building configuration: project - DebugUpdating build tree.2 file(s) deleted.Updating build ErrorLMS001: License check failed. If you had already installed itIt's possible that one day, you open your IDE and a new error appears. Managing the licenseWe have now to open the License Manager.For that, open the IDE and Help License Manager.A new window appears and click License Get Evaluation License.The License Wizard pop up asking you for register.Click the Register button.Your browser opens and you have to fill the form to have a license number in order to activate the IAR Embedded Workbench.An email is sent to you.Click on the validation link, on your email, and new page appears with your license number.Enter it and click Next on the License Wizard.Click Next again to activate the license.Click Done. Installing the IDELaunch the binary, something like EWARM-CD-6503 and install it on your computer. Downloading the IDEFor a time limited or a code size limited license you have to download the same software.Let's go on the IAR Systems official website:For a direct link:Select the processor or core you wish to work with and a new window appears.Just download the software. Use the IAR License Manager to resolve the problem.LicenseCheck:2.13.8.154, RMS:3., Feature:ARM.EW.COMPILER, Version:1.00Not so hard, but setting up IDEs is sometimes not so easy. If you already had some difficulties to install the IAR Embedded Workbench, let me explain how to get a time limited or a code size limited license.This tutorial will help you to remove this kind of error when trying build a project without a license:Fatal ErrorLMS001: No license found.

Iar 8051 license key