34 lines
1.2 KiB
Markdown
34 lines
1.2 KiB
Markdown
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## 83: SqlConnection.Open fails on Windows 7 with non-IFS Winsock BSP or LSP present
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### Scope
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Minor
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### Version Introduced
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4.5
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### Version Reverted
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4.5.2
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### Source Analyzer Status
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Planned
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### Change Description
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SqlConneciton.Open and OpenAsync fail in the .NET Framework 4.5 if running on a Windows 7 machine with a non-IFS Winsock BSP or LSP are present on the computer.
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To determine whether a non-IFS BSP or LSP is installed, use the `netsh WinSock Show Catalog` command, and examine every `Winsock Catalog Provider Entry` item that is returned. If the Service Flags value has the `0x20000` bit set, the provider uses IFS handles and will work correctly. If the `0x20000` bit is clear (not set), it is a non-IFS BSP or LSP.
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- [ ] Quirked
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- [ ] Build-time break
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### Recommended Action
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This bug has been fixed in the .NET Framework 4.5.2, so it can be avoided by upgrading the .NET Framework. Alternatively, it can be avoided by removing any installed non-IFS Winsock LSPs.
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### Affected APIs
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* `M:System.Data.SqlClient.SqlConnection.Open`
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* `M:System.Data.SqlClient.SqlConnection.OpenAsync(System.Threading.CancellationToken)`
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### Category
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Data
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[More information](https://connect.microsoft.com/VisualStudio/feedback/details/729323)
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