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Copy file name to clipboardExpand all lines: azure-sql/managed-instance/doc-changes-updates-known-issues.md
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@@ -5,7 +5,7 @@ description: Learn about the currently known issues with Azure SQL Managed Insta
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author: MashaMSFT
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ms.author: mathoma
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ms.reviewer: randolphwest
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ms.date: 02/13/2026
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ms.date: 03/03/2026
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ms.service: azure-sql-managed-instance
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ms.subservice: service-overview
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ms.topic: troubleshooting-known-issue
@@ -25,7 +25,7 @@ This article lists the currently known issues with [Azure SQL Managed Instance](
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|[Misleading error message when connecting to a read replica using invalid credentials](#misleading-error-message-when-connecting-to-a-read-replica-using-invalid-credentials)| February 2026 |
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|[Modifying backup retention period for the free offer](#modifying-backup-retention-period-for-the-free-offer)| June 2025 | Has workaround ||
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|[Login to read-secondary failed due to long wait on "HADR_DATABASE_WAIT_FOR_TRANSITION_TO_VERSIONING"](#login-to-read-secondary-failed-due-to-long-wait-on-hadr_database_wait_for_transition_to_versioning)| April 2025 | Has workaround ||
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|[Interim guidance on 2024 time zone updates for Paraguay](#interim-guidance-on-2024-time-zone-updates-for-paraguay)| March 2025 || February 2026 |
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|[Interim guidance on 2024 time zone updates for Paraguay](#interim-guidance-on-2024-time-zone-updates-for-paraguay)| March 2025 |Resolved| February 2026 |
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|[Error 8992 when running DBCC CHECKDB on a SQL Server database that originated from SQL Managed Instance](#error-8992-when-running-dbcc-checkdb-on-a-sql-server-database-that-originated-from-sql-managed-instance)| March 2025 | Has workaround ||
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|[Differential backups aren't taken when an instance is linked to SQL Server](#differential-backups-arent-taken-when-an-instance-is-linked-to-sql-server)| Sept 2024 | By design ||
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|[List of long-term backups in Azure portal shows backup files for active and deleted databases with the same name](#list-of-long-term-backups-in-azure-portal-shows-backup-files-for-active-and-deleted-databases-with-the-same-name)| Mar 2024 | Has workaround ||
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|[Wrong error returned while trying to remove a file that isn't empty](#wrong-error-returned-while-trying-to-remove-a-file-that-isnt-empty)| Oct 2019 | Resolved | August 2020 |
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|[Change service tier and create instance operations are blocked by ongoing database restore](#change-service-tier-and-create-instance-operations-are-blocked-by-ongoing-database-restore)| Sep 2019 | Has workaround ||
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|[Resource Governor on a readable secondary replica needs reconfiguration after failover](#resource-governor-on-a-readable-secondary-replica-needs-reconfiguration-after-failover)| Sep 2019 | Has workaround ||
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|[Cross-database Service Broker dialogs need reinitialization after service tier upgrade](#cross-database-service-broker-dialogs-need-reinitialization-after-service-tier-upgrade)| Aug 2019 |Has workaround ||
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|[Cross-database Service Broker dialogs need reinitialization after service tier upgrade](#cross-database-service-broker-dialogs-need-reinitialization-after-service-tier-upgrade)| Aug 2019 |Resolved | January 2020|
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|[Impersonation of Microsoft Entra login types isn't supported](#impersonation-of-azure-ad-login-types-isnt-supported)| Jul 2019 | No Workaround ||
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|[Transactional replication must be reconfigured after geo-failover](#transactional-replication-must-be-reconfigured-after-geo-failover)| Mar 2019 | No Workaround ||
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|[Exceeding storage space with small database files](#exceeding-storage-space-with-small-database-files)|| Has workaround ||
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### Cross-database Service Broker dialogs need reinitialization after service tier upgrade
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Cross-database Service Broker dialogs stop delivering the messages to the services in other databases after change service tier operation. The messages *aren't lost*, and they can be found in the sender queue. Any change of vCores or instance storage size in SQL Managed Instance causes a `service_broke_guid` value in [sys.databases](/sql/relational-databases/system-catalog-views/sys-databases-transact-sql) view to change for all databases. Any `DIALOG` created using a [BEGIN DIALOG](/sql/t-sql/statements/begin-dialog-conversation-transact-sql) statement that references Service Brokers in other databases stops delivering messages to the target service.
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**Workaround**: Stop any activity that uses cross-database Service Broker dialog conversations before updating a service tier, and reinitialize them afterward. If undelivered messages remain after a service tier change, read the messages from the source queue and resend them to the target queue.
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### Exceeding storage space with small database files
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`CREATE DATABASE`, `ALTER DATABASE ADD FILE`, and `RESTORE DATABASE` statements might fail because the instance reaches the Azure Storage limit on the General Purpose service tier, but not the [Next-gen General Purpose service tier upgrade](service-tiers-next-gen-general-purpose-use.md) or Business Critical service tier.
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This change in behavior is an unintended consequence of a required security fix. You can work around this issue by creating your own equivalent of the `system_health` session with an `event_file` target in Azure Blob Storage. For more information, including a T-SQL script to create the `system_health` session that can be modified to create your own equivalent of `system_health`, see [Use the system_health session](/sql/relational-databases/extended-events/use-the-system-health-session).
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### Cross-database Service Broker dialogs need reinitialization after service tier upgrade
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**(Resolved in January 2020)** Cross-database Service Broker dialogs stop delivering the messages to the services in other databases after change service tier operation. The messages *aren't lost*, and they can be found in the sender queue. Any change of vCores or instance storage size in SQL Managed Instance causes a `service_broke_guid` value in [sys.databases](/sql/relational-databases/system-catalog-views/sys-databases-transact-sql) view to change for all databases. Any `DIALOG` created using a [BEGIN DIALOG](/sql/t-sql/statements/begin-dialog-conversation-transact-sql) statement that references Service Brokers in other databases stops delivering messages to the target service.
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**Workaround**: Stop any activity that uses cross-database Service Broker dialog conversations before updating a service tier, and reinitialize them afterward. If undelivered messages remain after a service tier change, read the messages from the source queue and resend them to the target queue.
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## Contribute to content
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To contribute to the Azure SQL documentation, see the [Docs contributor guide](/sql/sql-server/sql-server-docs-contribute).
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