KB5004948
詳細情報
| KB番号 | KB5004948 Out-of-band - EXPIRED |
|---|---|
| リリース日 | 2021/07/07 |
| Windowsバージョン | Windows 10 1607 |
| ビルド番号 | 14393.4470 |
| URL(英語) | https://support.microsoft.com/en-us/help/5004948 |
| URL(日本語) | https://support.microsoft.com/ja-jp/help/5004948 |
| ダウンロード | Microsoft Update Catalog |
ハイライト
Updates a remote code execution exploit in the Windows Print Spooler service, known as “PrintNightmare”, as documented in CVE-2021-34527.
改良点
Addresses a remote code execution exploit in the Windows Print Spooler service, known as “PrintNightmare”, as documented in CVE-2021-34527. After installing this and later Windows updates, users who are not administrators can only install signed print drivers to a print server. By default, administrators can install signed and unsigned printer drivers to a print server. The installed root certificates in the system’s Trusted Root Certification Authorities trusts signed drivers. Microsoft recommends that you immediately install this update on all supported Windows client and server operating system, starting with devices that currently host the print server role. You also have the option to configure the RestrictDriverInstallationToAdministrators registry setting to prevent non-administrators from installing signed printer drivers on a print server. For more information, see KB5005010.
既知の不具合
| Symptom | Workaround |
|---|---|
After installing updates released April 22, 2021 or later, an issue occurs that affects versions of Windows Server that are in use as a Key Management Services (KMS) host. Client devices running Windows 10 Enterprise LTSC 2019 and Windows 10 Enterprise LTSC 2016 might fail to activate. This issue only occurs when using a new Customer Support Volume License Key (CSVLK). Note This does not affect activation of any other version or edition of Windows. Client devices that are attempting to activate and are affected by this issue might receive the error, "Error: 0xC004F074. The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information." Event Log entries related to activation are another way to tell that you might be affected by this issue. Open Event Viewer on the client device that failed activation and go to Windows Logs > Application. If you see only event ID 12288 without a corresponding event ID 12289, this means one of the following:
For more information on these event IDs, see Useful KMS client events - Event ID 12288 and Event ID 12289. | This issue is resolved in KB5010359. |
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