NAP Cryptographic API helper

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Click "Download Now" to get the PC tool that comes with the NAPCRYPT.DLL. The utility will automatically determine missing dlls and offer to install them automatically. Being an easy-to-use utility, it is is a great alternative to manual installation, which has been recognized by many computer experts and computer magazines. Limitations: trial version offers an unlimited number of scans, backup, restore of your windows registry for FREE. Full version must be purchased. It supports such operating systems as Windows 10, Windows 8 / 8.1, Windows 7 and Windows Vista (64/32 bit).
File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

Since you decided to visit this page, chances are you’re either looking for napcrypt.dll file, or a way to fix the “napcrypt.dll is missing” error. Look through the information below, which explains how to resolve your issue. On this page, you can download the napcrypt.dll file as well.


NAPCRYPT.DLL a DLL (Dynamic Link Library) file, developed by Microsoft, which is referred to essential system files of the Windows OS. It usually contains a set of procedures and driver functions, which may be applied by Windows.

What is NAPCRYPT.DLL used for?

NAPCRYPT.DLL file, also known as NAP Cryptographic API helper, is commonly associated with Microsoft® Windows® Operating System. It is an essential component, which ensures that Windows programs operate properly. Thus, if the napcrypt.dll file is missing, it may negatively affect the work of the associated software.

What is NAPCRYPT.DLL is missing error mean?

There are multiple reasons that may cause napcrypt.dll errors. These include Windows registry issues, malicious software, faulty applications, etc.

Error messages related to the napcrypt.dll file can also indicate that the file has been incorrectly installed, corrupted or removed.

Other common napcrypt.dll errors include:

  • “napcrypt.dll is missing”
  • “napcrypt.dll error loading”
  • “napcrypt.dll crash”
  • “napcrypt.dll was not found”
  • “napcrypt.dll could not be located”
  • “napcrypt.dll Access Violation”
  • “The procedure entry point napcrypt.dll error”
  • “Cannot find napcrypt.dll”
  • “Cannot register napcrypt.dll”
napcrypt.dll - System Error The program can`t start because napcrypt.dll is missing from your computer. Try reinstalling the program to fix problem.

How to fix NAPCRYPT.DLL missing error?

If the “napcrypt.dll is missing” error occurs, you may use one of the methods below – manual or automatic – to solve the problem. The manual method assumes that you download the napcrypt.dll file and put it inside the game/application installation folder, while the second method is much easier as it allows you to automatically fix the error with minimum effort.

Method 1: Download NAPCRYPT.DLL

Search through available versions of napcrypt.dll from the list below, select the correct file and press the “Download” link. If you cannot decide which version to choose, read the article below or use the automatic method to resolve the issue

NAPCRYPT.DLL, 9 available versions

Bits & Version File size Checksums
32bit 6.3.9600.16384 46.0 KB
MD5 673ab2830e5221381f95c4cef395a9c6
SHA1 1324ce9fae96f3621116766adbcde9465e32cd24
32bit 6.2.9200.16384 45.5 KB
MD5 5e324b853a6df51107fe6abab01a79e0
SHA1 079449c362e5eaac5a985f04724b55feb8ca0b1b
32bit 6.1.7601.17514 45.0 KB
MD5 93c4029dabc19166076be347283ab969
SHA1 8bfe1ae0a7ee85e2a7dbd902cbc92f8382b44d14
32bit 6.0.6001.18000 45.0 KB
MD5 18a24d038910fb55ac04edc30b95bec3
SHA1 b70229efa308b6e94071e69ca7b3a3c9088384fc
64bit 6.0.6001.18000 48.5 KB
MD5 93ffcfb7cf2d044b785f61e4862993db
SHA1 a2b31782f975e53079ee62490427cba5ad88056d
32bit 10.0.14393.0 46.0 KB
MD5 b60c246f52ea4c77b9d15c2968f32d09
SHA1 86032b75e66b87ac77416e62fd80de19475557f6
64bit 10.0.14393.0 51.0 KB
MD5 d79956a33cc16077de9a50aa384164d8
SHA1 fee447df397cb88a4934205c70bab7f162a45e26
64bit 10.0.10586.0 50.5 KB
MD5 23da7a75588be42dfc8fe69ae0e78dca
SHA1 19b098c60ff2205d287a22c7dd74c02a31c462bc
32bit 10.0.10586.0 45.5 KB
MD5 8d3fae80a136eb6f06c552c9c96202c2
SHA1 c80478e60ed7607ce20de42adfd66997a94b7254

How to choose the correct version of NAPCRYPT.DLL?

First, look through descriptions in the table above and select the proper file for your program. Pay attention to whether it’s a 64-, or 32-bit file, as well as the language it uses. For 64-bit programs, use 64-bit files if they are listed above.

It’s best to choose those dll files which language corresponds to the language of your program, if possible. We also recommend downloading the latest versions of dll files for an up-to-date functionality.

Where to place the NAPCRYPT.DLL file?

To repair the “napcrypt.dll is missing” error, put the file inside the application/game installation folder. Alternatively, you can place the napcrypt.dll file within the Windows system directory.

How to register NAPCRYPT.DLL?

If putting the missing napcrypt.dll file into the proper directory doesn’t solve the problem, you’ll have to register it. To do so, copy your DLL file to the C:\Windows\System32 folder, and open a command prompt with admin rights. There, type “regsvr32 napcrypt.dll” and press Enter.

Method 2: Fix the missing NAPCRYPT.DLL error automatically

With WikiDll Fixer you can automatically repair napcrypt.dll errors. The utility will not only download the correct version of napcrypt.dll for absolutely free and suggest the right directory to install it but also resolve other issues related to the napcrypt.dll file.
  • Step 1: Click the “Download App. ” button to get an automatic tool, provided by WikiDll.
  • Step 2: Install the utility by following simple installation instructions.
  • Step 3: Launch the program to fix your napcrypt.dll errors and other issues.
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See more information about Outbyte and unistall instrustions. Please review Outbyte EULA and Privacy policy

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: windows-versions

Limitations: trial version offers an unlimited number of scans, backup, restore of your windows registry for FREE. Full version must be purchased.

Method 3: Update drivers to restore missing .dll files

Driver updates for the Windows operating system, as well as for network adapters, monitors, printers, etc., can be independently downloaded and installed from the Windows Update Center or by using specialized utilities.

OPTION 1 - Automatic Device Drivers Update

Outbyte Driver Updater automatically updates drivers on Windows. Routine driver updates are now a thing of the past!
  • Step 1: Download the Outbyte Driver Updater
  • Step 2: Install the application
  • Step 3: Launch the app
  • Step 4: Driver Updater will scan your system for outdated and missing drivers
  • Step 5: Click Update to automatically update all drivers

OPTION 2 - Manually Update Device Drivers

  • Step 1: Go to Taskbar' search box - write Device Manager - choose Device Manager
  • Step 2: Select a category to look at the devices' names - make right-click the one that needs to be updated
  • Step 3: Choose Search automatically for updated driver software
  • Step 4: Look at Update Driver, and select it
  • Step 5: Windows might not be able to find the new driver. In this case, the user can see the driver on the manufacturer's website, where all the necessary instructions are available

Method 4: Scan your PC for malware to fix napcrypt.dll error

Sometimes napcrypt.dll error can happen because of malware on your computer. The malicious software can intentionally corrupt DLL files in order to substitute them with its own malicious files. Therefore, your number one priority should be to scan your computer for malware and eliminate it as soon as possible.

OPTION 1 - Windows Defender

The new version of Windows 10 has a built-in application called "Windows Defender", which allows you to check your computer for viruses and remove malware, which is difficult to remove in a running operating system. In order to use the Windows Defender Offline scan, go to the settings (Start - Gear icon or Win + I key), select "Update and Security" and go to the "Windows Defender" section.
How to use Windows Defender Offline Scan
  • Step 1: Press Win key or click on Start and click on Gear icon. Alternatively press Win + I key combination.
  • Step 2: Select Update and Security option and go to Windows Defender section.
  • Step 3: At the bottom of the defender settings there is the checkbox " Windows Defender Offline scan". To start it, click "Scan Now". Note that you have to save all unsaved data before rebooting your PC.

After clicking “Scan Now” burton, the computer will reboot and automatically start searching viruses and malware. Upon completion of the scan, the computer will restart, and in the notifications, you will see a report on the completed scan.

OPTION 2 - Outbyte Antivirus

Outbyte products are one of the most popular and effective to fight malware and unwanted programs, and they will come in handy even when you have a high-quality third-party antivirus installed. Scanning in the new version of Malwarebytes can be performed in real time and manually. To initiate manual scan please follow the steps below:
  • Step 1: Launch the Outbyte program and click Scan Now button. Also, you can select Scan option on the left side of the program’s window and click Full Scan. The system will begin scanning and you will be able to see the scan results.
  • Step 2: Select items that you want to quarantine and press “Quarantine Selected” button. When quarantined, you may be prompted to reboot the computer.
  • Step 3: After the program has been restarted, you can delete all quarantined objects by going to the appropriate section of the program or restore some of them if it turned out that after quarantining something from your software began to work incorrectly.

Method 5: Fix NAPCRYPT.DLL missing error with System File Checker (SFC)

Many users are familiar with the sfc / scannow system file integrity check command, which automatically checks and fixes protected Windows system files. To execute this command, you have to run command prompt as administrator.
  • Step 1: Start the command line as an administrator in Windows by pressing Win key on your keyboard and typing "Command Prompt" in the search field, then - right-click on the result and select Run as administrator. Alternatively, you can press Win + X key combination which will open the menu where you can select Command Prompt (Admin).
  • Step 2: Type sfc / scannow while in Command Prompt and hit Enter.

After entering the command, a system check will begin. It will take a while, so please be patient. Once operation is complete you will get the message “Windows Resource Protection found corrupt files and successfully repaired them.” or “Windows Resource Protection found corrupt files but was unable to fix some of them”.

Keep in mind that System File Checker (SFC) cannot fix integrity errors for those system files that are currently being used by operating system. To fix these files you have to run SFC command through the command prompt in the Windows recovery environment. You can get into Windows Recovery Environment from the login screen, by clicking Shutdown, then holding down the Shift key while selecting Restart.

In Windows 10, you can press Win key, select Settings > Update & security > Recovery and under Advanced Startup, click Restart now. You can also boot from the installation disk or bootable USB flash drive with the Windows 10 distribution. On the installation screen select your preferred language and then select “System Restore”. After that, go to “Troubleshooting” > “Advanced Settings” > “Command Prompt”. Once in Command Prompt type the following command: sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows where C is the partition with the installed operating system, and C: \ Windows is the path to the Windows 10 folder.

This operation will take a while and it is important to wait until it is complete. When finished, close the command prompt and restart the computer as usual.

Method 6: Fix corrupted NAPCRYPT.DLL file by performing System Restore

System Restore is very useful when you want to fix napcrypt.dll error. Using the "System Restore" function, you can choose restore Windows to the date when the napcrypt.dll file was not damaged. Thus, restoring Windows to an earlier date cancels changes made to system files. Please follow the steps below to roll back Windows using System Restore and get rid of napcrypt.dll error.
  • Step 1: Press the Win + R keys combination to launch Run dialog.
  • Step 2: Type rstrui in the Run text box and click OK or hit Enter. It will open the system recovery utility.
  • Step 3: The “System Restore” window may include the “Choose a different restore point” option. If so, select this option and click Next. Check the “Show more restore points” checkbox to see a complete list of dates.
  • Step 4: Select a date to restore Windows 10. Keep in mind that you need to select a recovery point that will restore Windows to the date when the napcrypt.dll error message did not appear.
  • Step 5: Click the "Next" button and then click "Finish" to confirm your restore point.

At this point, your computer will reboot normally and boot up with restored version of Windows, and napcrypt.dll error should be resolved.

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