如果您打开任务管理器^(Manager)并看到一个名为dllhost.exe的进程占用了您的大量磁盘^(Disk)，请不要立即断定它是病毒，因为它不是。在本文中，我们将了解什么是 dllhost.exe 以及为什么它显示 High Disk Usage。

什么是 dllhost.exe？

Dllhost.exe或COM 代理^{(COM Surrogate)}主机进程是Microsoft Windows进程。它被许多程序使用，包括但不限于 .NET运行时^(Runtime)进程。Dllhost.exe与svchost.exe一样，是所有面向COM+的编程代码所必需的。

因此，说它是病毒是不正确的。但是，病毒可以将自己命名为 dllhost.exe，并且您遇到 dllhost.exe磁盘使用^{(High Disk Usage)}率高的原因可能是该病毒。因此，要检查它是否是正版进程，请按Win + X > Task Manager任务管理^{(Task Manager)}器，转到详细信息^(Details)选项卡，右键单击 dllhost.exe，然后单击打开^(Open)文件位置。

如果您的文件的位置与以下相同，则该过程是真实的：

C:\Windows\System32

如果没有，您需要扫描您的 PC 以查找病毒和恶意软件。为此，请点击Win + S，键入“Windows Security”，然后单击Open。现在，单击病毒^(Virus)和威胁防护> Scan选项 > Microsoft Defender 脱机^{(Microsoft Defender Offline)}扫描> Scan立即扫描。

让它扫描您的计算机以查找病毒和恶意软件，如果发现则删除。

修复 dllhost.exe 高磁盘使用率

大多数情况下，dllhost.exe 的磁盘^{(High Disk)}使用率并不高，而是DLL文件可以使用此进程，从而导致磁盘^(Disk)使用率激增。因此，您可以关闭DLL文件以减少磁盘^(Disk)使用量。

您将在任务管理器^{(Task Manager)}中看到许多不同的 dllhost.exe 进程。要了解导致 dllhost.exe 资源利用率飙升的真正罪魁祸首进程，您需要知道哪个是违规进程——这就是您可以在Clean Boot State中识别的内容。

但是，如果您仍然遇到问题，并且您确定任务管理器^{(Task Manager)}中的 dllhost.exe不是病毒，您可以尝试这些方法来解决问题。基本上^(Basically)，我们确保您的操作系统文件和系统映像^{(System Image)}处于最佳状态。

1. 运行证监会
2. 运行 DISM。

让我们详细谈谈它们。

1]运行证监会

如果您面临 dllhost.exe，那么您的系统文件很可能已损坏。为了修复它们，我们将运行SFC和DISM。

为此，请以管理员身份启动命令提示符，键入以下命令，然后^{(Command Prompt)}按 Enter^(Enter)。

sfc /scannow

等待^(Wait)该过程完成，并希望错误将得到修复。

2]运行DISM

如果SFC没有解决问题，您可以运行DISM来解决问题。对于 以管理员身份启动命令提示符 ，键入以下命令并按^{(Command Prompt )}Enter。

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /RestoreHealth

如果您继续看到高资源利用率，那么您可能需要使用进程资源管理器^{(Process Explorer)}来找出导致此问题的加载进程或DLL文件。

相关^(Related)：程序 Exe 或 COM Surrogate 已停止工作^{(Program Exe or COM Surrogate has stopped working)}。

What is dllhost.exe and why is it showing High Disk Usage?

If you open your Task Managеr and see a process called dllhost.exe taking a high chunk of your Disk, don’t immediately conclude it to be a virus as it is not. In this article, we are going to see what is dllhost.exe and why is it showing High Disk Usage.

What is dllhost.exe?

Dllhost.exe or COM Surrogate host process is a Microsoft Windows process. It is used by many programs, including but not limited to .NET Runtime processes. Dllhost.exe, like svchost.exe, is required for all the COM+ oriented programming code.

Therefore, saying it is a virus is incorrect. However, a virus can name itself dllhost.exe, and maybe the reason why you are experiencing dllhost.exe High Disk Usage is the virus. So, to check if it’s a genuine process, launch Task Manager by pressing Win + X > Task Manager, go to the Details tab, right-click on dllhost.exe, and click Open file location.

If the location of your file is the same as the following then the process is genuine:

C:\Windows\System32

If not, you need to scan your PC for viruses and malware. To do that, hit Win + S, type “Windows Security”, and click Open. Now, click Virus & threat protection > Scan options > Microsoft Defender Offline scan > Scan now.

Let it scan your computer for viruses and malware and delete if found any.

Fix dllhost.exe High Disk usage

Most of the time, dllhost.exe does not have High Disk usage instead a DLL file can use this process causing a spike in Disk usage. So, you can close the DLL file to reduce Disk usage.

There are many different dllhost.exe processes you will see in the Task Manager. To know the real culprit process that is causing dllhost.exe resource utilization to spike, you need to know which is the offender process – and that is something you can identify in Clean Boot State.

But if you are still facing the issue and you are sure that the dllhost.exe in your Task Manager is not a virus, you can try these methods to fix the issue. Basically we are making sure that your OS files and the System Image is in the best of their health.

1. Run SFC
2. Run DISM.

Let us talk about them in detail.

1] Run SFC

If you are facing dllhost.exe then chances are your system files are corrupt. To fix them we are going to run SFC and DISM.

To do that, launch Command Prompt as an administrator, type the following command, and hit Enter.

sfc /scannow

Wait for the process to complete and hopefully, the error will be fixed.

2] Run DISM

If SFC didn’t fix the issue, you can run DISM to fix the issue. For that launch Command Prompt as an administrator, type the following commands and hit Enter.

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /RestoreHealth

If you continue to see high resource utilization then you might want to use Process Explorer to find out which loaded process or DLL file is causing this issue.

Related: Program Exe or COM Surrogate has stopped working.

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