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Operating System Error 995 on Adding a Database to an AG

Andrew Pruski troubleshoots a problem:

I was adding databases to an availability group (SQL Server 2017 CU20 instance) the other day and one database failed to automatically seed to the secondary.

When I looked in the SQL Server error log I saw this error message: –

BackupIoRequest::ReportIoError: write failure on backup device ‘{GUID}’. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).

Read on to see how Andrew solved the problem.

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