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Resolving INS-20802: Oracle Net Configuration Assistant failed error on Windows 10

I was all excited about the migration to Windows 10 until I had to install Oracle client 12.1.0.2 on it. The Oracle client installation used to fail miserably at the last stage with this error named INS-20802.


As with several Oracle error messages, the details were hardly of any use and no clear understanding was possible even after examining the error log. Googling for the error led me to several forum posts but most of them didn't have the right solution - most answer seekers were meeting with dead ends.

I tried several methods for resolving the issue - 
  1. Disabling Windows UAC
  2. Disabling firewall
  3. Disabling antivirus - mine was a fresh VM, so disabled Windows Defender
  4. Adding localhost IP i.e., 127.0.0.1 to the hosts file etc.
but none of them helped.

At last I found this which suggested installing Microsoft Visual C++ 2010 Redistributable Package (x86) and this solved the problem in a matter of seconds! I just had to click 'Retry' on the installation dialog.

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Location: Hyderabad, Telangana, India

Comments

  1. Navy Cmdre Fatah Olanrewaju SanusiThursday, December 6, 2018 at 6:13:00 PM GMT+5:30

    Perfect Answer

    ReplyDelete
  2. FahadFriday, December 21, 2018 at 3:18:00 AM GMT+5:30

    Thanks!
    That resolved my issue too.
    Good info

    ReplyDelete
  3. AnonymousFriday, March 29, 2019 at 9:48:00 PM GMT+5:30

    Thank You

    ReplyDelete
  4. UnknownThursday, May 30, 2019 at 5:11:00 AM GMT+5:30

    Muchas gracias, definitivamente la instlación del paquete redistribuible de Microsoft Visual C ++ 2010 (x86) me hacia falta!

    ReplyDelete
  5. UnknownTuesday, July 2, 2019 at 9:05:00 PM GMT+5:30

    Thank you so much!

    ReplyDelete
  6. Mihir JivaniThursday, August 15, 2019 at 10:01:00 PM GMT+5:30

    This C++ Package did the trick for me as well. Worked Like a charm.

    Also I had not attempted below update. Directly installed the Redistribution package.
    Disabling Windows UAC
    Disabling firewall
    Disabling antivirus - mine was a fresh VM, so disabled Windows Defender
    Adding localhost IP i.e., 127.0.0.1 to the hosts file etc.

    ReplyDelete
  7. aneesh.parasseriyilTuesday, October 1, 2019 at 6:43:00 PM GMT+5:30

    I have tried the same way which described the above . But the same error remain. could you help on this ?

    ReplyDelete
  8. UnknownFriday, October 18, 2019 at 1:30:00 AM GMT+5:30

    Thanks a lot! it helped me to resolve the issue.

    ReplyDelete
  9. gg'Monday, February 3, 2020 at 10:51:00 AM GMT+5:30

    worked for me thank you

    ReplyDelete
  10. AnonymousMonday, March 2, 2020 at 3:38:00 PM GMT+5:30

    Saved my day! Thanks!

    ReplyDelete
  11. JohnTuesday, May 5, 2020 at 11:46:00 PM GMT+5:30

    This is it! This is the answer!

    ReplyDelete
  12. OdelleFriday, June 12, 2020 at 1:52:00 AM GMT+5:30

    Thank you so much!

    ReplyDelete
  13. AnonymousFriday, June 12, 2020 at 5:46:00 PM GMT+5:30

    Thank you!

    ReplyDelete
  14. PrabhakarThursday, June 18, 2020 at 11:24:00 AM GMT+5:30

    Thank you, it worked.

    ReplyDelete
  15. AnonymousWednesday, July 8, 2020 at 3:11:00 PM GMT+5:30

    Bless you, Sir..

    ReplyDelete
  16. AmandosFriday, July 10, 2020 at 12:23:00 AM GMT+5:30

    Well done

    ReplyDelete
  17. VenkatSunday, July 19, 2020 at 9:48:00 PM GMT+5:30

    Thanks a lot for sharing. It helped.

    ReplyDelete
  18. UnknownFriday, July 24, 2020 at 12:07:00 AM GMT+5:30

    Worked. Thanks

    ReplyDelete
  19. izoisuFriday, July 24, 2020 at 11:25:00 AM GMT+5:30

    its not working for me
    configuration is still failed

    ReplyDelete
  20. AnonymousSaturday, October 10, 2020 at 3:18:00 AM GMT+5:30

    Perfect Man!! Thanks a lot

    ReplyDelete
    Replies
    1. RajeshFriday, November 20, 2020 at 6:16:00 AM GMT+5:30

      Still I have same error on database configuration assistant while creating and starting oracle instance

      Delete
  21. BilouMacFriday, February 19, 2021 at 2:55:00 PM GMT+5:30

    Bonjour (je suis Français alors je ne parle que français ;-) ).
    Merci beaucoup pour la solution. Parfait.
    Thanks a lot.

    ReplyDelete
    Replies
    1. UnknownFriday, May 7, 2021 at 6:13:00 PM GMT+5:30

      Just ensure your system is on LAN with valid IP address

      Delete
    2. AnonymousFriday, June 25, 2021 at 1:32:00 PM GMT+5:30

      Can you send me a new download link for the C++ package ? Because the one in the article doesnt work anymore. Thanks you !

      Delete
  22. AnonymousFriday, October 22, 2021 at 1:02:00 AM GMT+5:30

    I was stuck whit the same problem, I google it and the correct answer it´s the one you post. Dude, THAAAANKSSSSS!!!!!

    ReplyDelete
  23. UnknownSunday, January 9, 2022 at 11:46:00 PM GMT+5:30

    thank u

    ReplyDelete
  24. AnonymousMonday, July 11, 2022 at 8:29:00 PM GMT+5:30

    Thank you so much, it worked!

    ReplyDelete
  25. AnonymousTuesday, January 17, 2023 at 2:53:00 PM GMT+5:30

    Thank you. It really works.

    ReplyDelete

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