Exchange Server 2019 articles, fixes and updates - letter H

This list contains all of the known Microsoft Knowledge Base articles, howtos, fixes, hotfixes, webcasts and updates of Microsoft Exchange Server 2019 starts with letter H that have been released. The list is daily updated.

• 5037224 Hotfix update for Exchange Server 2019 and 2016: April 23, 2024 (KB5037224) Q5037224 KB5037224 May 7, 2024
• 5035689 "High %Time in GC" and EWS doesn't respond Q5035689 KB5035689 February 16, 2024
• 5035158 "HTTP 503" error and incomplete client-side search results in Exchange 2019 (KB5035158) Q5035158 KB5035158 January 19, 2024
• 5026274 Hybrid Agent Validation fails after Extended Protection is enabled Q5026274 KB5026274 May 3, 2023
• 5014253 Hybrid Configuration Wizard update — April 2022 (KB5014253) Q5014253 KB5014253 April 20, 2022
• 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2019 and 2016 Q4549689 KB4549689 January 20, 2021
• 4515263 Hide the "Validate-MailFlowThroughFrontDoor" command for Exchange Server 2019 and 2016 Q4515263 KB4515263 January 20, 2021
• 4515257 Hash mismatch is reported for Exchange DLLs in the bin directory of Exchange Server 2019 and 2016 Q4515257 KB4515257 January 20, 2021
• 4499503 Heavy traffic because of restriction created when organization forms library has more than 500 items in Exchange Server 2019 and 2016 Q4499503 KB4499503 October 23, 2020