Traceback (most recent call last):
  File ".../freeze.py", line 493, in <module>
    main()
  File ".../freeze.py", line 222, in main
    flagged_version = version + sys.abiflags
AttributeError: module 'sys' has no attribute 'abiflags'

Here is the patch, I'm not sure if any more changes are needed there, so it would be good to test.

Thanks for the patch! It makes the error go away for me, but only because `ishome` is True in my case. Were it False, it would fail the same way on the line containing sys.abiflags .
I think this line in the patch:
        flagged_version = version + sys.abiflags
should be changed to:
        flagged_version = version + abiflags
That way I get no errors regardless of the value of `ishome`.

Sure, that was just a typo. While "no errors" is good news, does the code is actually doing what it's supposed to do? Are you sure there aren't any hidden issue related to the potentially incorrect paths?

It works OK for me, but as mentioned above `ishome` is True in my setup, so the path-related changes in the patch don't affect my setup in any way. I really don't know how it would affect setups of other people where `ishome` is False. So no, I can't be sure about hidden issues related to potentially incorrect paths. Sorry for not being able to help with that aspect here :(

Given that it's a Windows issue, I'm sure Windows core developers in the nosy list would find a way to verify the fix. For the record, this bug was introduced in issue 11824.

That folder won't ever exist on Windows - if anything it should just be os.path.join(sys.execprefix, "DLLs"), but I'm not even sure how valuable that is.

This appears to be a duplicate of Issue32217 which was fixed in 3.7.4 and 3.8.0. If that doesn't solve the problem, please reopen with a current failure.