Mclmcrrt9-9.dll [better] 100%

After installation, ensure Windows can find the DLL:

If an application was compiled with MCR v9.9 (R2020b), it will fail to load mclmcrrt9-10.dll (R2021a). The version numbers must be exact. This is the #1 cause of errors like: mclmcrrt9-9.dll

Follow these steps in order to resolve the issue. After installation, ensure Windows can find the DLL:

Once MCR 9.9 (R2020b) is properly installed, the file resides in: v9.10 or v9.8)

You might have a newer or older version of the MATLAB Runtime (e.g., v9.10 or v9.8), but the application specifically demands v9.9.