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Here is a working solution for error message: Error 997. Overlapped I/O operation is in progress.

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First try to remove the most recently installed Microsoft Security Updates by going to the Control Panel > Programs and features and clicking on "View installed updates" from the left side of the dialog box.We tried to uninstall any Microsoft security updates that we could find. Then reboot the machine and try the installation.This didn't work so we had to do the following:Go to your C:Autodesk folder and double click on the folder you installed your software from.In the Window Explorer (Win 7)  or File Explorer (Win 8.1) dialog box type *.msi in the upper right corner to search for every .msi files. Make note of the .msi's locations. (There can be up to 100 .msi files depending on the media you are installing from.)

Edit the Registry

If the install still fails, add the product code of the product you are trying to install to the SecureRepairWhitelist in the Windows registry.

Click Start, click Run, type regedit in the Open box, and then click OK.Locate and then click the following subkey in the registry (create it if it doesn't exist):HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsInstallerOn the Edit menu, point to New, and then click DWORD Value.Type SecureRepairPolicy for the name of the DWORD, and then press Enter.Right-click SecureRepairPolicy, and then click Modify.In the Value data box, type 2, and then click OK.Locate and then click the following subkey in the registry:HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsInstallerOn the Edit menu, point to New, and then click Key.Type SecureRepairWhitelist for the name of the key, and then press Enter.Double-click the SecureRepairWhitelist key to open it.On the Edit menu, point to New, and then click String Value. Create String Values that contain the product codes (including braces ) of the products that have to be added to the Safe Recipients list.

    3.   You have to download and install Orca MSI editing tool. You can get it from the Microsoft SDK for windows or from this download link from OneDrive.

    4.   Now for each of the .msi files you found you need to find their Product Code by following these steps found at this Autodesk knowledge page.

Download and install the Orca MSI editing tool Navigate to the MSI file for the product. (For example, the MSI file for AutoCAD LT 2015 (acadlt.msi) is under x64acadlt in the install media or deployment package.)Right-click on the file and select Edit with Orca.Click the Property table in the left pane.Go to Edit > Find and search for ProductCode.You will see the Product Code in the Value column in the right pane.

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NOTE: You need to find a product Code for each of the .msi files in the installation folder or this solution will not work.