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I have my application developed in hybrid technology (asp classic + asp.net). Initially it was hosted on IIS with "Classic" Pipeline mode. I Upgraded Application Pool Pipeline mode from "Classic" to "Integrated" after that unexpected 500 errors started logging in IIS log with no descirption.

I did a lot of research and found that it happens only then when pool recycles.

Can anyone please help me to get this issue resolved? I am stuck at this point.

Muhammad Faisal
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  • Please kindly check full error message on the server first as 500 internal server error is generic issue. It is hard to determine your problem – Mark Spencer May 04 '18 at 02:57
  • I tried to get full error message but there is nothing except this 500 internal server error with exception code 0 64. I googled about this exception code it gave "Network name is no longer available". One thing I doubt is that may be this issue is occurred on request received by the IIS server during the pool recycling. – Muhammad Faisal May 07 '18 at 12:01
  • Have you login to the server to check it? If you are not logged in to the server, you wont know the full error message – Mark Spencer May 16 '18 at 07:33

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