gethostbyname – First chance exception 0x000006C5: The tag is invalid

When running a Win32 application on WOW64, you’ll get such a first-chance exception–but the code will continue to work as usual. The exception only slows down operation. See: Bug report

Just to (hopefully) help those who google the above error.



  1. bill said

    > Just to (hopefully) help those who google the above error.


  2. Idetrorce said

    very interesting, but I don’t agree with you

  3. Duplicate said

    It would be a real help to people if this added information to the bug report we already found. 🙂

  4. Muhammad Haggag said

    The thing is, back when I added this entry it was a bit hard to find the bug report, so I created this pointer article 🙂

  5. Marsh Ray said

    Thanks for the concise answer!

  6. sandrar said

    Hi! I was surfing and found your blog post… nice! I love your blog. 🙂 Cheers! Sandra. R.

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