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How to Download and Fix efs.h1s?

Sometimes Windows system displays error messages regarding corrupted or missing efs.h1s files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent efs.h1s file can therefore effect in failed execution of the started process.

efs.h1s file Microsoft Help Compiled Help Data. The file was developed by Microsoft for use with Windows software. Here you will find detailed information about the file and instructions how to proceed in the event of efs.h1s related errors on your device. You can also download efs.h1s file compatible with Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 7, Windows Vista

File info

General information
Filename efs.h1s
File extension H1S
Type Windows Help
Description Microsoft Help Compiled Help Data
Software
Program Windows 7
Software Windows
Author Microsoft
Software version 7
Details
File size 58859
Oldest file 2009-04-11
Latest file 2011-04-12
efs.h1s

There are various types of errors related to efs.h1s file. efs.h1s file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to efs.h1s file. If you encounter one listed below (or similar), please consider the following suggestions.

  • efs.h1s is corrupted
  • efs.h1s cannot be located
  • Runtime Error - efs.h1s
  • efs.h1s file error
  • efs.h1s file cannot be loaded. Module was not found
  • cannot register efs.h1s file:
  • efs.h1s file could not be loaded
  • efs.h1s file doesn't exist

efs.h1s

Error

Application could not be started because efs.h1s file is missing. Reinstall the application to solve the problem.

OK

Problems related to efs.h1s can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing efs.h1s file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

efs.h1s file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with efs.h1s file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to efs.h1s file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of efs.h1s or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to efs.h1s file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the efs.h1s file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the efs.h1s file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the efs.h1s file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace efs.h1s file

The last solution is to manually download and replace efs.h1s file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded efs.h1s file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of efs.h1s file example directory paths.

  • Windows 7: C:\Windows\Help\Windows\en-US\
  • Windows Vista: C:\Windows\Help\Windows\en-US\

If the steps did not solve your efs.h1s file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename efs.h1s
System Windows 7
File size 58859 bytes
Date -0001-11-30
File details
MD5 ae41bfdd7f2eb5ca2e042dba10e3e08f
SHA1 bec1d1a2bda9efcb579396ffc178ea3207cad415
SHA256 c9b1ce3ed19f36cd71454a9bbd6066d45c874d77ce084cfc4c4b3f1d6f2d16f4
CRC32 1280ea27
Example file location C:\Windows\Help\Windows\en-US\
Filename efs.h1s
System Windows Vista
File size 90732 bytes
Date -0001-11-30
File details
MD5 e13a131dc09b851aabd8601004c5c59e
SHA1 a0f0ae8b673bb60dbef0851ea43f659388a70a68
SHA256 ecf6f4e47fd658e7d9be7f1a333a8fb5a46726f48ac22fff300f80f115f45e72
CRC32 f648abd5
Example file location C:\Windows\Help\Windows\en-US\