Fix: Api-Ms-Win-Crt-Runtime-l1-1-0.Dll Is Missing Error

A problem “Api-Ms-Win-Crt-Runtime-l1-1-0.Dll is missing is prompted when a user cannot open iTunes. Most Windows users face this issue once they update to the most up-to-date version of iTunes. The problem seems to have been encountered by users for a couple of years. And this trouble seems to occur when there is a new iTunes update.


Fix: api-ms-win-crt-runtime-l1-1-0.dll Is Missing Error 

The api-ms-win-crt-runtime-l1-1-0.dll file seems to misbehave only in the location Program Files / iTunes, though it has located in three different locations.The following methods will help if you are currently facing this issue.


The issue has been identified, and a compilation of solutions have been produced to resolve the api-ms-win-crt-runtime-l1-1-0.dll is missing” inaccuracy. Do follow the methods cited under to solve this issue. Let’s get started!

Method 1: Substituting api-ms-win-crt-runtime-l1-1-0.dll With a Local Copy

Few clients have pointed out that the “api-ms-win-crt-runtime-l1-1-0.dl”l file is found in diverse places. Few other users have resolved the error by swapping the “api-ms-win-crt-runtime-l1-1-0.dll” file from the “Program Files / iTunes with a copy from Program Files / Common Files / Apple / Apple Applications Support to put right the “api-ms-win-crt-runtime-l1-1-0.dll is missing” error.

The remaining clients have reported that this solution functions only when all the DLL files are copied and pasted from the Apple Application Support. Some users have conveyed that the resolution is only temporary, though this approach has a high chance of bringing success.

Whenever this specific DLL file is updated, the setback arises. Go directly to Method 2 once the issue appears in the next update and if there is a need for a permanent fix. The following is a brief direction on how to substitute the api-ms-win-crt-runtime-l1-1-0.dll file with a different home copy:

Step 1: At first, ensure that every process of Apple is closed including the iTunes.

Step 2: Second, select the Program Files / Common Files / Apple / Apple Applications Support.

Step 3: Then, copythe “api-ms-win-crt-runtime-l1-1-0.dll”, including all the former DLL files that can be found in the root folder of Apple Application Support.

Step 4: Afterwards, go to Program Files / iTunes and paste the entire formerly copied things there.

Step 5: Lastly, start iTunes and see if the software manages to open without the api-ms-win-crt-runtime-l1-1-0.dll is missing”.

If the same error is prompted again, follow Method 2.

Method 2: Installing The Universal C Runtime Update

Consequently, by installing the Update for Universal C Runtime in Windows, many clients have handled to find resolution to the “win-crt-runtime-l1-1-0.dll is missing” error.It is to be noted that the update should involuntarily be installed through Windows Update (WU). There is also a manual method that will particularly install what iTunes needs.

Follow the manual given beneath to revise the “win-crt-runtime-l1-1-0.dll is missing” issue by uninstalling the Universal C Runtime update based on the specified Windows version:

Step 1: At first, visit the official website of Microsoft.

Step 2: Second, scroll along to the Microsoft Download Centre (Method 2).

Step 3: Then, select the package that is associated to the Windows version.

Step 4: And, on the next page, select the language and push the Download button to begin the download.

Step 5: Further, once the update gets downloaded, open the installer and follow the prompts on-screen to launch it on the device.

Step 6: Finally, reboot your computer after the installation. And observe at the next start-up if the “win-crt-runtime-l1-1-0.dll is missing” error has brought any resolution.

Go to Method 3 if you are still encountering the issue.

Method 3: Installing Visual C++ Redistributable For Visual Studio 2015

The file win-crt-runtime-l1-1-0.dll may not be installed as part of a Windows mechanism, service pack update, or standard update and could cause issues because a few programs rely on “win-crt-runtime-l1-1-0.dll” specific runtime folder to work.

Furthermore, the Visual C++ Redistributable for Visual Studio 2015 package includes all DLL files required by iTunes. Install the package on your device after downloading it.If installing the Visual C++ Redistributable for Visual Studio 2015 doesn’t alleviate the problem, proceed to the last method.

Method 4: Installing an Older iTunes Version

Those clients who attempted the aforementioned solutions devoid of success were merely able to get around the win-crt-runtime-l1-1-0.dll is missing error by reinstalling a prior version of iTunes.

Although, this method is not as simple as it may be because the downgrade will not achieve the desired results unless the user eliminates all Apple-related features.To eliminate each Apple-related element and install a past iTunes version, follow the steps below:

Step 1: At first, to open a Run box press Windows key + R.

Step 2: Then, to open Programs and Features, type “appwiz.cpl” and click on Enter.

Step 3: Second, in Programs and Features, click on the Publisher button at the top of the column to ensure that each program signed by Apple Inc are uninstalled.

Step 4: Then, by right-clicking on each Apple software and clicking Uninstall. Likewise, we can uninstall all the software signed in by Apple Inc.

Step 5: Further, reboot the device once all the software signed by Apple has been uninstalled.

Step 6: Subsequently, go to the iTunes installers section on the official page. Then, select a link connected with the past iTunes version to begin the download.

Step 7: Finally, Launch the iTunes installer and go after the on-screen instructions to install the previous version of iTunes on the device. To verify whether the “win-crt-runtime-l1-1-0.dll is missing” problem has been resolved; restart the device when the version has been successfully installed.


Read the entire article to get the ideal result for the problem. These are the most reliable and simple approaches for resolving the aforementioned error.   If one method does not work well, users may always attempt the other. To achieve the desired outcomes, make sure to properly follow all of the instructions aforementioned.