flexrelease_x64.dll Missing (Not Found) Error [Fix Guide]

Download the missing DLL and get FallOut 4 running

by Kazim Ali Alvi
Kazim Ali Alvi
Kazim Ali Alvi
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows. And at times, unscrewing the device to take... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • The flexrelease_x64.dll is released for Fallout 4, a popular RPG title amongst the gaming community.
  • If the DLL is missing, it's the corrupt game files or issues with the initial installation to blame.
  • To fix things, use a dedicated DLL repair tool or verify the integrity of game files, amongst other solutions.
fix missing flexrelease_x64.dll
For fixing DLL errors, we recommend Fortect: This tool will replace the damaged or corrupted DLLs with their functional equivalents using its dedicated repository where it has the official versions of the DLL files.
  1. Download and Install Fortect on your PC
  2. Launch the tool and Start scanning to find DLL files that could be causing PC problems
  3. Right-click on Start Repair to replace broken DLLs with working versions
  • Fortect has been downloaded by 0 readers this month.

While several hundred DLL files are stored in the System32 and SysWOW64 folders, that’s not the end. Many specific third-party programs can be found in their dedicated directory, and when these DLLs are missing, the app fails to launch. One of these is flexRelease_x64.dll.

Linked to Fallout 4, when the file is not found, users can’t run the Steam game and encounter an error. The error log reads, Unhandled exception “EXCEPTION_ACCESS_VIOLATION” at 0x7FFB2B997AE3 flexRelease_x64.dll+0027AE3. So, let’s find out how to fix flexRelease_x64.dll.

Why is flexRelease_x64.dll missing?

Here are a few reasons the DLL is missing or not found:

  • The file was moved or deleted: Though rare, there’s always the possibility of the end user moving the DLL out of the game’s directory or deleting the file without realizing it, which will trigger the error message.
  • Corrupt game cache: In most cases, the missing flexRelease_x64.dll error appeared when Fallout 4’s game cache was corrupt on Steam. And there’s a built-in solution for it.
  • Issues with the game installation: For a few users, it was the initial problematic game installation to blame. When the installer runs into problems, or there are issues with the Internet, such errors may be reported.

What can I do when flexRelease_x64 is missing?

Tip icon Tip
We recommend against downloading flexRelease_x64.dll from the online platforms (websites) that claim to be hosting it. The reason, there are times when the file turns out to be malware and subsequently damages the PC.

1. Use a dedicated DLL repair tool

For third-party apps, like Fallout 4 on Steam, it’s often tricky to identify and download the missing DLL compared to the ones published by Microsoft. Because for the latter, you have the SFC scan, DISM tool, and a plethora of other built-in Windows solutions.

So, when flexRelease_x64.dll is missing, it’s recommended to use the best DLL repair tool, which will automatically locate and replace the missing/corrupt DLL file. Its extensive database stores almost every DLL published to date.

2. Move the file to the affected game’s folder

A solution that worked for many was copying the missing DLL from another PC and moving it to the game’s directory on the affected computer. With default installation settings in place, the path should be:C:\Program Files (x86)\Steam\steamapps\common\Fallout 4

Though in some cases, it’s the Program Files folder instead of Program Files (x86). Whatever the case, get the flexRelease_x64.dll file from a computer running Fallout 4, move it to the discussed folder, and things should run seamlessly. Can’t do that, fret not! We have other solutions.

3. Verify the integrity of game files

  1. Launch Steam, and then navigate to the Library from the top.open Library
  2. Right-click on Fallout 4, and select Properties.properties
  3. Navigate to the Local Files tab, and click on Verify integrity of game files.verify integrity of game files to fix flexrelease_x64.dll
  4. Wait for the process to complete, and then check if you can launch the game.fix game files to get missing flexrelease_x64.dll

With Steam’s built-in option to fix minor issues with game files, you can get things up and running in minutes when flexRelease_x64.dll is missing in Fallout 4.

4. Reinstall the game

  1. Press Windows + R to open Run, type appwiz.cpl in the text field, and hit Enter.appwiz.cpl
  2. Select Fallout 4 from the list of programs here, and click Uninstall.uninstall app to fix flexrelease_x64.dll
  3. Follow the on-screen instructions to complete the process.
  4. Once done, make sure to delete any files in the following locations (depending on the drive Steam is installed in) as well:\Steam\SteamApps\Common\Fallout 4 \Documents\My Games\Fallout 4
  5. Next, restart the computer for the changes to come into effect.
  6. Finally, you can download Fallout 4 on Steam all over again, and it should run without throwing an error.fallout 4 on steam

Problems with the app installation are a common reason flexRelease_x64.dll is missing in Fallout 4 on Steam. And a quick solution is to uninstall the app and then reinstall it from scratch. If there are still some leftover files, use an effective uninstaller software for the best results.

Besides, after downloading flexRelease_x64.dll, we recommend you get a reliable DLL repair tool to avoid running into similar issues.

For any queries on the subject or to share more solutions with us, drop a comment below.

Still experiencing issues?


If the above suggestions have not solved your problem, your computer may experience more severe Windows troubles. We suggest choosing an all-in-one solution like Fortect to fix problems efficiently. After installation, just click the View&Fix button and then press Start Repair.

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