[SQL] installing SQL Server msigetproductinfo cannot retrieve product code 1605 error Solution

On SQL Server 2008 on the database server for reinstallation, the following problems are encountered:

Title: SQL Server InstallationProgramFailed.
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The SQL Server installer encounters the following errors:

Msigetproductinfo cannot retrieve the productversion of the package whose product code is {3df3169-f0d0-4388-b4d9-72a1fcc875e1. ErrorCode: 1605 ..

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Button:

OK
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Msigetproductinfo "cannot search for the productversion of the package of product code {3df00009-f0d0-4388-b4d9-72a1fcc875e1}. It was very depressing at the beginning. I clearly cleared the registration. Is there any value that has not been cleared, I checked the information! The value corresponding to hkey_classes_root \ Installer \ upgradecodes is not deleted! So how can we find the corresponding value (which many people may not be clear)? Here I will give a clear description:

When the system prompts the guid {3df3169-f0d0-4388-b4d9-72a1fcc875e1,

First, the previous "3df00009" Of The GUID is inverted to 99863fd3, and then the hkey_classes_root \ Installer \ upgradecodes in the registry is searched for the inverted value,

After finding the node, delete the corresponding parent node.

At this point, the installation problem should be solved, but sometimes the system may prompt multiple guids, but do not worry, and then follow the above method.

Find the solution on the internet, experiment in person, OK. Solve the problem.