Hi Mohamed Khalifa,
Thank you for reaching out to Microsoft Q & A forum.
While KB2390372 is indeed a hotfix released for the .NET Framework 4.0 to address specific issues or bugs, it may not currently be available for download or support.
As an alternative, I recommend the following:
1.Check for Windows Updates: Ensure that your system is up to date by checking for Windows updates through the Windows Update feature in your system settings. Sometimes, important hotfixes are included in these updates.
2.Look for .NET Framework Updates: Explore newer updates or service packs for the .NET Framework 4.0. Microsoft frequently releases cumulative updates or service packs that may include fixes for a range of issues, including those addressed by individual hotfixes.
3.Contact Microsoft Support: If you're experiencing a specific issue that KB2390372 was meant to address, please feel free to reach out to Microsoft support for assistance. Our support team can provide alternative solutions or guidance on resolving the issue.
4.Community Forums: Search Microsoft community forums or other tech forums for insights from other users who may have encountered similar issues. They might have found workarounds or alternative solutions.
While the specific availability of hotfix KB2390372 may vary, I hope one of these alternatives helps resolve your issue. If you have any further questions or need additional assistance, please feel free to ask.
If you have found the answer provided to be helpful, please click on the "Accept answer/Upvote" button so that it is useful for other members in the Microsoft Q&A community.
Thank you.