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FIX: Api-ms-win-crt-heap-l1-1-0.dll is missing

The error can occur due to a faulty installation

4 min. read

Updated onMarch 18, 2024

updated onMarch 18, 2024

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Key notes

Attempting to open anyMicrosoft Officeapplications such as Word, Excel, PowerPoint, and such might often lead to the generation of an error that shows the message – api-ms-win-crt-heap-l1-1-0.dll missing.

That is rather curt and the least user-friendly, more so for the non-tech types. However, it still can be dealt with effectively and easily with just a little bit of patience and a few changes here and there.

As should be evident fromerror messagesthemselves, the issue has to do with a faulty installation.

So, going for an uninstall of your Office suite followed by re-installing the same can be the easiest way to be remedied from the problem.

However, before you get into that, attempting a repair of the currentinstallationis also recommended. Here is how you can do that.

How can I fix the Api-ms-win-crt-heap-l1-1-0.dll missing error?

How can I fix the Api-ms-win-crt-heap-l1-1-0.dll missing error?

1. Use dedicated software to fix the DLL error

DLL problems are common but it’s not so simple to solve. We recommend that you don’t download the file from a random website as it may hide a malware infection.

Fixing the Api-ms-win-crt-heap-l1-1-0.dll error manually can be extremely tedious but usingthird-party softwarecan fix the issue quickly and automatically.

2. Repair your MS Office installation

Somehow, the Office suite can suffer from a corrupted installation. However, you can modify and repair the installation as shown in the steps above.

3. Uninstall it from the Control Panel

However, while this makes for the most user-friendly method of uninstalling MS Office from your PC, what has to be kept in mind is that this does not delete (all) the files and registry entries pertaining toOffice.

Instead, configuration information in files such as Word Normal.DOTM remains intact.

This allows for futureinstallationsto use the same configuration details and hence ensures you do not lose on any of your existing work.

The Control Panel uninstaller often leaves behind unwanted files like installation wizards or temporary files. These take up space for no reason and can prevent you from reinstalling the program again.

This is why we recommend you try one of thebest uninstaller softwarebecause they are built to detect and permanently remove any leftover files.

4. Uninstall MS Office manually

Before you get into this, it is extremely important to understand the process is complex, lengthy, and could be taxing on both your mind and body.

Further, a few wrong steps can require you to go for a complete re-installationof the entire operating system as well.

So make sure you have a clear understanding of what you are up to and plan your steps with caution. At the same time, it isn’t rocket science either, which means it shouldn’t be too tall an ask to pull off the entire thing.

Refer to theMicrosoft help pagefor all the info you need to manually uninstall MS Office from your PC.

5. Re-install MS Office

After you have successfully completed the un-installationprocess, here is how you can do a re-install of MS Office. You can do it fromthe Microsoft support page.

The page carried detailed info such as Quick Install of the Office files or a more elaborate step-by-step instruction for both PC and Mac computers.

After you are done with the re-installation process, the ‘api-ms-win-crt-heap-l1-1-0.dll missing’ error message should be gone for good.

More about the topics:DLL errors,Microsoft Office

Ivan Jenic

Windows Hardware Expert

Passionate about all elements related to Windows and combined with his innate curiosity, Ivan has delved deep into understanding this operating system, with a specialization in drivers and driver troubleshooting.

When he’s not tackling diverse driver-related problems, Ivan enjoys watching good movies and spending time hiking with his family and friends.

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Ivan Jenic

Windows Hardware Expert

Ivan has delved deep into understanding the Windows OS, with a specialization in drivers and driver troubleshooting.