Computer Support Blog

The Semaphore Timeout Period has Expired Issue Solutions

Have you ever encountered the semaphore timeout period has expired issue? Indeed, this issue has several different situations and there are various solutions which can get rid of this problem.

Many of you may don’t know what the semaphore timeout period has expired Windows 10 issue is. But, it is possible to encounter this issue sometimes in various situations as follows:

Case 1: The Semaphore Timeout Period has Expired Hard Drive/USB Drive

Sometimes, when you want to open an external hard drive or flash drive which is connected to your computer via USB, you can’t access it but only receive this error message:

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In some cases, you can’t open the file on the USB drive but only see the following error:

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This is an annoying issue especially when you need to use the external hard drive/USB flash drive or the files on it immediately.

Case 2: The Semaphore Timeout Period has Expired Copying Files

This issue always happens when you want to copy a large file over a network. And perhaps, you will get Error 0x80070079: The semaphore timeout period has expired message.

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Case 3: Backup Failed: the Semaphore Timeout Period has Expired

When you use the Windows built-in tool to create a system image, the backup process may be interrupted by this issue. And you will get additional information as the semaphore timeout period has expired (0x80070079).

These are three common situations of the semaphore timeout period has expired Windows 10 issue. If you happen to be bothered by this issue, do you know how to get rid of it? In the following content, I will show you several available solutions.

Solution 1: Use CHKDSK to Check and Repair Bad Sectors & Disk Errors

Bad sectors or disk errors on the drive can lead to the semaphore timeout period has expired issue. Thus, you can try CHKDSK to check and then shield the bad sectors or fix the disk errors.

  1. Go to Start > Search.
  2. Type cmd into the search box, right-click the first result and choose Run as administrator to open Command Prompt
  3. Type in chkdsk *: /f /r and press Enter. Here, * stands for the target drive letter.

When this process ends, CHKDSK will automatically fix the found errors or shield the discoverable bad sectors.

Then, you can go to see if the semaphore timeout period has expired Windows 10 issue disappears. If not, please try solution 2.

Solution 2: Run System File Checker to Repair Missing or Corrupted System Files

Some users reflect that they solve the issue by using the System File Checker tool. Thus, you can also try this way.

  1. OpenCommand Prompt.
  2. If you are using Windows 10/8.1/8, please input the following command line and pressEnter:

DISM.exe /Online /Cleanup-image /Restorehealth

If you are using Windows 7/Vista, please skip to the next step.

     3. Inputsfc /scannowand press Enter.

Solution 3: Do a Clean Boot

In Clean Boot State, you will be able to diagnose and troubleshoot some advanced Windows problems. This Microsoft official post will show you the detailed steps about this work: How to perform a clean boot in Windows.

Solution 4: Convert FAT32 to NTFS

This issue always happens when you copy a large file to external USB drives, like USB flash drives, memory cards, SD cards, and more because they are using FAT32 by default.

So, go to see whether the destination drive is using FAT32. If yes, please first convert FAT32 to NTFS.

If you use the Windows built-in tool to do this job, you need to format the drive to NTFS and of course, it will format all files on the drive. However, if you choose to use this partition manager - MiniTool Partition Wizard, you can do this job without data loss.

     1. Connect the USB drive to your computer and open the software.

  1. ClickLaunch Application.
  2. Right-click on the target USB drive and chooseConvert FAT to NTFS.

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4. Click Start to start the converting process.

  1. When the process ends, pressCloseto go back to the main interface.
  2. Exit the software.

After this conversation, you can go to see whether you can transfer the large file successfully.

Solution 5: Create a System Image with Third-party Software

When referring to creating a system image, you can try this professional backup software - MiniTool ShadowMaker.

This software can be used to back up Windows system, files & folders, disks and partitions on the computer.

To use it as an alternative tool to create a system image, you can refer to this article:

Easily & Free Create a Windows…up Now - MiniTool

Apart from the solutions mentioned above, you may try more methods to solve timeout period has expired issue:

Temporarily Disable Antivirus and Firewall

Update Wireless network adapters

Recover Files from the Inaccessib…mat It to Normal

In most cases, the above relevant solutions can fix the inaccessible drive with the semaphore timeout period has expired issue. However, if you still can’t enter the drive, to make the drive be back to normal, you will need to format it.

If there are some important files on the drive, you should use MiniTool Power Data Recovery 8.5, a piece of free data recovery software, to first recover your important files.

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