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500 Internal Server Error after upgrading from 9.13.10 to 10

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Jeremy Farrance

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2/26/2026 12:34 PM

Antonion, I am curious. Did you restore and then upgrade to 9.13.09 and then 10? Or did you make it from 9.13.10 to DNN 10? And to clarify, you went from 9 to 10.02.01? or??

Antonio D

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2/26/2026 12:59 PM

Two days ago I restored, then upgraded from 9.6.2 to 9.13.9, removed telerik, removed 51Degrees, changed the SQL compatibility level, and then upgraded to 10.2.1.

Marco Alvarado

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3/9/2026 1:56 PM

I love this kind of thread! by just going through the whole conversation you get to learn so much. Thanks Antonio for sharing your troubleshooting on this one.

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