We have not seen this issue locally but it is really critical issue if it is a bug. The message “SqlConnection does not support parallel transactions
” means that read operations are mixed on a connection with a running transaction. This occurs when IObjectScope is used with multiple threads which actually we avid and we use “one scope per thread”. You said that exception appears randomly, but I will really appreciate if you can share some more details like
- environment setup
- how many users access the website at the same time
- does the issue occurs only on pages
- what actions you perform to get the error
All the best,
the Telerik team
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