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Fix AltTab.dll.mui Errors

Sometimes Windows system displays error messages regarding corrupted or missing AltTab.dll.mui 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 AltTab.dll.mui file can therefore effect in failed execution of the started process.

AltTab.dll.mui file Windows Shell Alt Tab. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of AltTab.dll.mui related errors on your device. You can also download AltTab.dll.mui file compatible with Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista

File info

General information
Filename AltTab.dll.mui
File extension MUI
Description Windows Shell Alt Tab
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
AltTab.dll.mui

There are various types of errors related to AltTab.dll.mui file. AltTab.dll.mui 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 AltTab.dll.mui file. If you encounter one listed below (or similar), please consider the following suggestions.

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

AltTab.dll.mui

Error

Application could not be started because AltTab.dll.mui file is missing. Reinstall the application to solve the problem.

OK

Problems related to AltTab.dll.mui 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 AltTab.dll.mui 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.

AltTab.dll.mui 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 AltTab.dll.mui 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 AltTab.dll.mui 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 AltTab.dll.mui 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 AltTab.dll.mui file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the AltTab.dll.mui 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 AltTab.dll.mui 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 AltTab.dll.mui 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 AltTab.dll.mui file

The last solution is to manually download and replace AltTab.dll.mui 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 AltTab.dll.mui file.

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

  • Windows 8.1: C:\Windows\System32\en-US\
  • Windows 8: 1: C:\Windows\System32\en-US\
  • Windows 7: C:\Windows\SysWOW64\en-US\
  • Windows 7: C:\Windows\SysWOW64\en-US\
  • Windows Vista: C:\Windows\SysWOW64\en-US\
  • Windows Vista: C:\Windows\SysWOW64\en-US\

If the steps did not solve your AltTab.dll.mui 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 AltTab.dll.mui
System Windows 8.1
File size 2560 bytes
Date 2014-11-21
File details
MD5 15833fe6358724c24e4ac2e917c5b062
SHA1 aff5aefc1fc100d9219fc364c7448e0f5dea55ad
SHA256 7fb5d1e49111a58108c8b060efa8391f712eedfc1587eaa7f6666db27e361649
CRC32 7a2e7752
Example file location C:\Windows\System32\en-US\
Filename AltTab.dll.mui
System Windows 8
File size 2560 bytes
Date 2012-07-26
File details
MD5 a4ead73afe736429a1ce3785936b4852
SHA1 5a0d9c63e8c75653fc7b495ee4bcd0fb6e6a410b
SHA256 4e1f927e0da7e293027be4d9b51e35c46ba7d437cd4bc9d13f6368978fbd9dc6
CRC32 f013de7e
Example file location 1: C:\Windows\System32\en-US\
Filename AltTab.dll.mui
System Windows 7
File size 2560 bytes
Date 2011-04-12
File details
MD5 3831784c7f30ede2975489ea9b22d23a
SHA1 4185c391dda8373b739f6d54a68faecf431fee13
SHA256 5240cfd2c7812d49de7c0f9a92e5ea547fac1240483d283d71162d9e8991fe45
CRC32 aa23dd4d
Example file location C:\Windows\SysWOW64\en-US\
Filename AltTab.dll.mui
System Windows 7
File size 2560 bytes
Date -0001-11-30
File details
MD5 f390cebbb8772f13fd4d36c0c37ff7f9
SHA1 686cafcb3983b6cd1a9590692bc87240953ce127
SHA256 d91a7c3cb8b152789d1553137bcc7417458a87e68bd9e0c174d642bcb6c653d0
CRC32 bd36d79b
Example file location C:\Windows\SysWOW64\en-US\
Filename AltTab.dll.mui
System Windows Vista
File size 2560 bytes
Date -0001-11-30
File details
MD5 05686afee1c4686ae0b4caf5c8de38cd
SHA1 b1ffb21f24749296a784e33cf4a795a985b5e1e4
SHA256 d5c22d84d00f422f1f4213d4df11acbc0165a5ffdc803359e8d0a6ad767aca7f
CRC32 77815c9a
Example file location C:\Windows\SysWOW64\en-US\
Filename AltTab.dll.mui
System Windows Vista
File size 2048 bytes
Date 2006-11-02
File details
MD5 c714c621561dc0151215e688df166080
SHA1 bc1fedc2aa6205c366c3c2e9e83d0787ba9cec7d
SHA256 d520bae41b620929330327ba1d8bebe449e78cc4051e440057dc54593463e39b
CRC32 c12c2e2e
Example file location C:\Windows\SysWOW64\en-US\