Corrupt Python 3.12 Installer (64 bit)

Hello,
first time writer here. I installed Python 3.12.9 per Installer (release version 5. February 2025). And my installer is absolutely corrupt.
Neither can I use the interpreter (tried with pycharm) nor does modify, repair or uninstall do anything. The installer just says “successful” but the software persists.

I have been using numerous approaches, using the shell, deleting all folders (in AppData etc.) deleting registry keys, but no matter what I do, in windows “installed apps” Python 3.12.9 (64-bit) of Python Software Foundation still persists.

Redownloading the installer and trying to uninstall does nothing. I am on the brink of insanity, and by now I am pretty sure its a bug.

Comparison: Using the Installer for 3.13 works like a charme, installing as uninstalling.

Anyone has any idea on what to do?

Did you verify the checksums after the download, to make sure it’s not just a spot of bad luck, isolated to yourself?

you mean the MD5Sum? Per Python.org thats: 1cfb1bbf96007b12b98db895dcd86487 for the python 3.12.9 Windows 64-bit Installer. But to which sum should I compare that to?

Compare to the value computed locally, e.g. in PowerShell:

c:\...\Downloads> CertUtil -hashfile python-3.14.0a3-amd64.exe md5
MD5 hash of python-3.14.0a3-amd64.exe:
7528efdf439ed963ddd28a318955ae71
CertUtil: -hashfile command completed successfully.

with the values on the websites, e.g. for me https://www.python.org/downloads/release/python-3140a3/:

Windows installer (64-bit) Windows Recommended 7528efdf439ed963ddd28a318955ae71 27.6 MB

Hello, i did as you told me, but both checksums are completely identical. So that should not be the problem.