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---
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title: Error 0x800719e4 (ERROR_LOG_FULL) when Windows update fails
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description: Discusses how to fix Windows Update failures that relate to error code `0x800719e4 (ERROR_LOG_FULL)`. Typically, this error occurs on Azure-hosted Windows virtual machines (VMs).
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title: Error 0x800719e4 (ERROR_LOG_FULL) When Windows Update Fails
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description: Discusses how to fix Windows Update failures related to error code `0x800719e4 (ERROR_LOG_FULL)` -- typically on Azure-hosted Windows virtual machines.
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ms.date: 01/08/2026
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manager: dcscontentpm
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audience: itpro
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- ✅ <a href=https://learn.microsoft.com/windows/release-health/supported-versions-windows-client target=_blank>Supported versions of Windows Client</a>
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- ✅ <a href=https://learn.microsoft.com/lifecycle/products/azure-virtual-machine target=_blank>Azure Virtual Machines</a>
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---
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# Error 0x800719e4 (ERROR_LOG_FULL) when Windows update fails
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# Error 0x800719e4 (ERROR_LOG_FULL) when Windows Update fails
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This article discusses how to fix Windows Update failures that relate to error code `0x800719e4 (ERROR_LOG_FULL)`. Typically, this error occurs on Azure-hosted Windows virtual machines (VMs).
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This article discusses how to fix Windows Update failures that are related to error code `0x800719e4 (ERROR_LOG_FULL)`. Typically, this error occurs on Azure-hosted Windows virtual machines (VMs).
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## Symptoms
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When you try to install an update, the installation fails with error code `0x800719e4 (ERROR_LOG_FULL)`. The update might appear to install, but after the computer restarts at the end of installation, the installation rolls back. The Windows Update history might list repeated failed installations.
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When you try to install an update through Windows Update, the installation fails and returns error code `0x800719e4 (ERROR_LOG_FULL)`. The update might appear to install. However, after the computer restarts at the end of installation, the installation rolls back. The Windows Update history might list repeated failed installations.
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When you check the System log and the Component-Based Servicing (CBS) log, you see errors that might include the following error messages:
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When this issue occurs, the System log and Component-Based Servicing (CBS) log might include any of the following error messages:
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- `Failed uninstalling driver updates [HRESULT = 0x800719e4 - ERROR_LOG_FULL]`
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- `Startup: Failed while processing non-critical driver operations queue`
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## Cause
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Typically, this issue occurs during the installation or uninstallation of cumulative or driver-related updates.
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Typically, this issue occurs during the installation or uninstallation of cumulative or driver-related updates. This issue has various possible causes:
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- **Transaction log exhaustion, corruption, or improper cleanup**. Windows transaction logs (.blf files and .regtrans-ms files in \Windows\System32\Config\TxR) become full or corrupted, blocking update processes. Improper cleaning of the transaction logs can lead to further system corruption and startup failures.
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- **"Ghosted" network adapters or drivers**. VMs that are frequently deallocated and reallocated in Azure can accumulate "ghosted" or hidden device entries that remain in the system registry but are no longer physically present. This behavior has been observed for Mellanox devices. When this behavior occurs, driver update queues increase in size and logs eventually overflow.
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- **Transaction log exhaustion, corruption, or improper cleanup**. Windows transaction logs (.blf files and .regtrans-ms files in \Windows\System32\Config\TxR) become full or corrupted, and then block update processes. Improper cleaning of the transaction logs can cause further system corruption and startup failures.
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- **"Ghosted" network adapters or drivers**. VMs that are frequently deallocated and reallocated in Azure can accumulate "ghosted" or hidden device entries that remain in the system registry but are no longer physically present. This behavior has been observed in Mellanox devices. When this behavior occurs, driver update queues increase in size, and logs eventually overflow.
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- **Misconfigured update orchestration**. Incorrect settings for update orchestration (such as not using the **Customer Managed** option) can contribute to update failures.
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## Resolution
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> [!IMPORTANT]
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>
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> - If the affected computer is a Windows virtual machine (VM) that can't restart correctly or that you can't access by using SSH, make sure that you can use the Azure Serial Console to access the VM.
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> - If the affected computer is a Windows VM that can't restart correctly or that you can't access by using SSH, make sure that you can use the Azure Serial Console to access the VM.
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> - Before you troubleshoot this issue, back up the operating system disk. For information about this process for VMs, see [About Azure Virtual Machine restore](/azure/backup/about-azure-vm-restore).
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> - Use administrative permissions to run all of the commands and scripts in these steps.
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> - Use administrative permissions to run all the commands and scripts that are provided in these steps.
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### Step 1: Check the system health
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To check the system health, and make any necessary repairs, open an administrative Command Prompt window, and then run the following commands:
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To check the system health and make any necessary repairs, open an administrative Command Prompt window, and then run the following commands:
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```console
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DISM /Online /Cleanup-Image /RestoreHealth
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SFC /SCANNOW
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```
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Review the output for errors or corruption. If these commands made repairs, try to again install the update.
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Review the output for errors or corruption. If these commands make repairs, try again to install the update.
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### Step 2: Clean up the transaction logs
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> [!IMPORTANT]
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> As mentioned previously in this article, incorrectly cleaning up transaction logs can cause more issues. Follow these steps carefully. This section contains two procedures. In most cases, you should use Option A. Use Option B only if the affected computer is a VM that can't start.
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> Cleaning up transaction incorrectly logs can cause more issues to occur. Follow these steps carefully. This section contains two procedures. In most cases, you should use Option A. Use Option B only if the affected computer is a VM that can't start.
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**Option A (Safer method): Rename the TxR and Windows Update folders**
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**Option A: Rename the TxR and Windows Update folders (safer method)**
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1. To stop the Windows Update service (WUauServ) and the Background Intelligent Transfer Service (BITS), run the following commands:
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1. Restart the computer, and then try again to install the update.
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**Option B (Use only on a VM that doesn't start): Use a rescue VM to remove files**
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**Option B: Use a rescue VM to remove files (use only on a VM that doesn't start)**
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1. Create a rescue VM, and then move the operating system disk from the affected VM to the rescue VM.
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1. On the rescue VM, in an administrative command prompt window, change the working directory to \<drive>:\Windows\System32\Config\TxR.
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1. On the rescue VM, open an administrative command prompt window, and then change the working directory to \<drive>:\Windows\System32\Config\TxR.
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1. To remove the system and hidden attributes from the transaction log files, run the following command:
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```console
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For more information about this issue, see [Azure VM Ghosted Nic Validation and Cleanup Tools](../../azure/virtual-machines/windows/windows-vm-ghostednic-tool.md).
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> [!NOTE]
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> A computer that accumulates ghosted network adapters or drivers might continue to do so. Consider checking for this issue periodically as part of regular maintenance.
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> A computer that accumulates ghosted network adapters or drivers might continue to behave in this manner. Consider checking for this issue periodically as part of regular maintenance.
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1. Download the following scripts:
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- [Windows_GhostedNIC_Detection.ps1](https://github.com/Azure/azure-support-scripts/blob/master/RunCommand/Windows/Windows_GhostedNIC_Detection.ps1)
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- [Windows_GhostedNIC_Removal.ps1](https://github.com/Azure/azure-support-scripts/blob/master/RunCommand/Windows/Windows_GhostedNIC_Removal.ps1)
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1. To detect any ghosted network adapters or drivers, open an administrative Windows PowerShell Command Prompt window and then run the following commands:
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1. To detect any ghosted network adapters or drivers, open an administrative Windows PowerShell Command Prompt window, and then run the following commands:
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```powershell
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Set-ExecutionPolicy Bypass -Force

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