{
  "id": 15758403,
  "title": "Having Windows Outlook access problems? An update might have caused it.",
  "url": "https://urgent.news/2026/10/20/having-windows-outlook-access-problems-an-update-might-have-caused-it",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-20T14:57:15.000Z",
  "source": {
    "name": "Mashable",
    "slug": "mashable",
    "url": "https://mashable.com/tech/microsoft-windows-outlook-connection-error-update"
  },
  "original_language": "en",
  "account": "Microsoft has reportedly introduced a new Windows update that has caused access issues for Outlook on certain Exchange Server systems, according to a security note cited by BleepingComputer. This problem specifically affects Exchange Server systems running Windows Server 2019 and later versions. Users may encounter difficulties accessing Outlook or have messages stuck in the Outlook outbox without being sent.\n\nThere is currently no definitive solution to resolve this issue, as Microsoft has indicated that the severity of the problem varies across different servers, with some systems not experiencing any problems at all. In a separate announcement, Microsoft advised users not to uninstall the problematic update. Instead, it offered a workaround to mitigate the issue until a more permanent fix is available.\n\nTo attempt this workaround, users should open an elevated Command Prompt on an affected Exchange Server and enter the following command: \"reg add HKLM\\SOFTWARE\\Microsoft\\Rpc /v EpmapSavedContextCap /t REG_DWORD /d 65536 /f\". After entering the command, the user should reboot the server. This action is intended to help alleviate the problem until Microsoft releases a comprehensive solution.",
  "summary": "Microsoft said that some Outlook users are experiencing connectivity issues due to a Windows Server security update.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}