Lenovo Computer Manager frequently reports errors "msvcp140.dll is missing", and the official recommendation is to uninstall third-party security software

Some Lenovo laptop users have reported that the Lenovo Computer Manager installed on their devices frequently pops up "msvcp140.dll is missing" error messages, causing the software to fail to start normally or crash during operation. This problem has caused users to worry about software stability and data security.

According to user feedback, this error mainly occurs when Lenovo Computer Manager starts or performs specific functions (such as virus scanning and driver updating). Some users have particularly prominent problems after upgrading to the latest version in 2025. For example, a Yoga series user mentioned in the forum that even if the Microsoft Visual C++ Redistributable component is reinstalled through the official repair tool, the error will still appear repeatedly. In addition, some users have found that after uninstalling third-party security software (such as 360 Security Guard, Tencent Computer Manager), the frequency of error reports is significantly reduced. This phenomenon echoes Lenovo's official recommendations.

From a technical perspective, msvcp140.dll is the core file of the Microsoft Visual C++ Redistributable component and is responsible for providing C++ program runtime support. Missing or damaged files are usually related to incomplete component installation, conflicting system updates, or accidental deletion of third-party software. Lenovo officials pointed out that when third-party security software scans or cleans system files, it may mistakenly identify msvcp140.dll as a potential threat and isolate it, causing the runtime files that Lenovo Computer Manager relies on to become invalid. For example, some users triggered file conflicts after enabling the "System First Aid Kit" function of Lenovo Computer Manager and 360 Security Guard at the same time.

In response to this problem, Lenovo community technical support staff recommends that users take the following measures: First, uninstall all Microsoft Visual C++ Redistributable components through "Control Panel - Programs and Features", and then visit Microsoft's official website to download the latest version and reinstall it. Secondly, temporarily uninstall the third-party security software and retain only the security protection functions of Lenovo Computer Manager to avoid resource preemption and accidental file deletion caused by multiple software running in parallel. In addition, users can also scan and repair damaged system files through Windows System File Checker (SFC). The specific steps are: run the command prompt as an administrator, enter "sfc /scannow" and wait for the scan to complete.

Industry experts point out that software compatibility issues are more common in scenarios where multiple security software coexists. Lenovo Computer Manager is a tool that deeply integrates hardware management functions. Its driver update, battery maintenance and other modules have high requirements on the integrity of system files, and the active defense mechanism of third-party security software may interfere with the normal execution of these functions. It is recommended that users give priority to using the "original driver" and "security center" functions officially recommended by Lenovo, and regularly update drivers through Lenovo's official website to reduce compatibility risks.

It's worth noting that long-term reliance on registry modifications or manual downloading of DLL files is not a sustainable solution. Lenovo’s recently released ThinkBook 16 2025 has tried to dynamically adjust system resource allocation through “geek mode”, but traditional functions such as battery management still rely on the Visual C++ runtime library. In the future, dynamic file protection mechanisms combined with machine learning may become the key to solving such problems.

Lenovo has not officially released a dedicated firmware update for 2025 models, but promises to optimize the file detection logic in subsequent versions. For affected users, rational response to technical failures, combined with manual maintenance and after-sales support, is still a pragmatic choice to ensure stable operation of the equipment.

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