Microsoftnet Desktop Runtime 80 X64 2021 //top\\ Online

Note: I have interpreted "80" as (version 8), as "80" is the common shorthand for that version. However, the year "2021" creates a slight mismatch—.NET 8.0 was released in 2023 . I have addressed this accuracy note directly in the post below.

or simply:

Once installed, Microsoft updates the runtime automatically via the standard Windows Update utility. Frequently Asked Questions microsoftnet desktop runtime 80 x64 2021

If an app prompts you that .NET 8.0 is missing after you installed it, you likely downloaded the wrong architecture. Ensure you downloaded the version rather than the x86 (32-bit) or Arm64 versions. Repair a Corrupt Installation Open the Windows Settings app. Navigate to Apps > Installed apps . Search for Microsoft .NET Desktop Runtime 8.0 (x64) . Click the three dots, select Modify , and click Repair . If you need help resolving a specific error, tell me: The exact error message you are seeing The name of the application you are trying to open Your Windows version (Windows 10 or 11) Note: I have interpreted "80" as (version 8),