SQL Server 2019 articles, fixes and updates - April 2021

This list contains all of the known Microsoft Knowledge Base articles, howtos, fixes, hotfixes, webcasts and updates of Microsoft SQL Server 2019 that have been released in April 2021. The list is daily updated.

• 4583468 Microsoft SQL Server elevation of privilege vulnerability Q4583468 KB4583468 April 16, 2021
• 5000649 FIX: Wrong results due to undetected concatenation parameters from scalar expression Q5000649 KB5000649 April 7, 2021
• 5001526 FIX: Access violation occurs when Dynamic Data Masking and nested UDFs are used in SQL Server 2019 Q5001526 KB5001526 April 6, 2021
• 5001517 FIX: Metadata deadlock causes availability issues when changing auditing properties in SQL Server 2019 Q5001517 KB5001517 April 6, 2021
• 5001266 FIX: Access violation occurs when hybrid buffer pool is enabled in SQL Server 2019 Q5001266 KB5001266 April 6, 2021
• 5001159 FIX: Assertion failure occurs when Online Clustered Columnstore Index Rebuild reuses truncated hobt instead of new hobt in SQL Server 2019 Q5001159 KB5001159 April 6, 2021
• 5001044 FIX: Wrong results occur when you run a query on In-Memory optimized tables in SQL Server Q5001044 KB5001044 April 6, 2021
• 5000650 FIX: Incorrect results occur when you run query on In-memory optimized table that has clustered columnstore index in SQL Server 2016 or 2019 Q5000650 KB5000650 April 6, 2021
• 4548523 FIX: Database creation to Azure blob storage from SQL Server 2017 or 2019 on Linux may fail with error Q4548523 KB4548523 April 6, 2021
• 4486936 FIX: "Login failed for user" error occurs when you run Maintenance plan with SQL login account in SQL Server Q4486936 KB4486936 April 6, 2021