{"id":4631,"date":"2025-10-17T11:52:44","date_gmt":"2025-10-17T06:22:44","guid":{"rendered":"https:\/\/toolswift.com\/blog\/?p=4631"},"modified":"2025-10-17T11:52:44","modified_gmt":"2025-10-17T06:22:44","slug":"how-to-fix-0x8007003b-error-when-copying-files-in-windows-10-or-11","status":"publish","type":"post","link":"https:\/\/toolswift.com\/blog\/how-to-fix-0x8007003b-error-when-copying-files-in-windows-10-or-11\/","title":{"rendered":"How to Fix 0x8007003B Error When Copying Files in Windows 10 or 11"},"content":{"rendered":"

If you\u2019re seeing the 0x8007003B<\/strong> error while copying files from your Windows 10 or 11 computer to another device or network drive, don\u2019t worry \u2014 it\u2019s a fairly common issue. This error usually pops up when something interrupts the file transfer, such as disk format limits, antivirus blocks, network issues, or damaged system files.<\/p>\n

Let\u2019s go through a few simple ways to fix it.<\/p>\n

1. Check the Drive Format<\/h2>\n

If the file you\u2019re trying to copy is larger than 4 GB<\/strong>, make sure your target drive isn\u2019t using the FAT32<\/strong> format. FAT32 doesn\u2019t support files over 4 GB, which causes the transfer to fail.<\/p>\n

How to check your drive format:<\/strong><\/p>\n

    \n
  1. Open This PC<\/em> from File Explorer.<\/li>\n
  2. Right-click the drive and choose Properties<\/strong>.<\/li>\n
  3. Look for the File System<\/em> line \u2014 if it says FAT32<\/strong>, that\u2019s the problem.<\/li>\n<\/ol>\n

    You have two options:<\/p>\n

      \n
    • Compress the file<\/strong> using a tool like 7-Zip to make it smaller.<\/li>\n
    • Reformat the drive<\/strong> to NTFS<\/strong> (this will erase everything on it, so back up first).<\/li>\n<\/ul>\n

      To reformat:<\/p>\n

        \n
      1. In This PC<\/em>, right-click the drive \u2192 Format<\/strong>.<\/li>\n
      2. Choose NTFS<\/strong> under File System<\/em>.<\/li>\n
      3. Check Quick Format<\/strong> and click Start<\/strong>.<\/li>\n<\/ol>\n

        Once done, try the transfer again.<\/p>\n

        2. Scan and Repair the Disk<\/h2>\n

        Sometimes the issue comes from errors on the drive itself. You can use Windows\u2019 built-in disk check tool to find and fix these problems.<\/p>\n

        Steps:<\/strong><\/p>\n

          \n
        1. Open This PC<\/em>, right-click the drive, and choose Properties<\/strong>.<\/li>\n
        2. Go to the Tools<\/strong> tab.<\/li>\n
        3. Under Error checking<\/em>, click Check<\/strong> \u2192 Scan and repair drive<\/strong>.<\/li>\n<\/ol>\n

          This will automatically repair common file system errors that may cause the transfer to fail.<\/p>\n

          3. Turn Off Antivirus and Firewall (Temporarily)<\/h2>\n

          Your antivirus or Windows Defender Firewall might mistakenly block the file transfer. You can turn them off for a short while to test if that\u2019s the cause.<\/p>\n

          To disable Windows Defender Firewall:<\/strong><\/p>\n

            \n
          1. Open Windows Security<\/em> from the Start menu.<\/li>\n
          2. Go to Firewall & network protection<\/strong>.<\/li>\n
          3. Choose the active network and switch Microsoft Defender Firewall<\/strong> off.<\/li>\n<\/ol>\n

            To turn it back on, repeat the steps and re-enable the toggle.<\/p>\n

            If you use third-party antivirus software, temporarily pause it while transferring the file, then turn it back on afterward.<\/p>\n

            4. Run a System File Check<\/h2>\n

            Corrupted Windows system files can also trigger the 0x8007003B error. Running a System File Checker (SFC)<\/strong> scan can help repair them.<\/p>\n

            Here\u2019s how:<\/strong><\/p>\n

              \n
            1. Right-click the Start menu and select Terminal (Admin)<\/strong> or Command Prompt (Admin)<\/strong>.<\/li>\n
            2. Type the following commands one by one, pressing Enter after each:DISM.exe \/Online \/Cleanup-image \/Restorehealth
              \nsfc \/scannow<\/code><\/li>\n
            3. Wait for the process to complete and restart your computer.<\/li>\n<\/ol>\n

              This will repair or replace damaged system files that may be interfering with file transfers.<\/p>\n

              5. Reset Network Settings<\/h2>\n

              If the error appears while transferring files over a network (like to a NAS or another PC), try resetting your Windows networking components.<\/p>\n

              Open Command Prompt (Admin)<\/strong> and run these commands one by one:<\/p>\n

              netsh winsock reset
              \nnetsh int ip reset
              \nipconfig \/release
              \nipconfig \/renew
              \nipconfig \/flushdns<\/code><\/p>\n

              Restart your computer afterward and try again.<\/p>\n

              6. Use System Restore<\/h2>\n

              If the issue started recently after installing new software or changing system settings, you can roll Windows back to a working state using System Restore<\/strong>.<\/p>\n

              How to do it:<\/strong><\/p>\n

                \n
              1. Search for Create a restore point<\/em> and open it.<\/li>\n
              2. In the System Protection<\/em> tab, click System Restore<\/strong>.<\/li>\n
              3. Click Next<\/strong>, then choose a restore point created before the problem started.<\/li>\n
              4. Follow the prompts to complete the process.<\/li>\n<\/ol>\n

                This will revert your system files and settings to a previous state without affecting your personal data.<\/p>\n

                Conclusion<\/h2>\n

                The 0x8007003B error can appear for many reasons \u2014 from file size limits and corrupted system files to antivirus interference or bad sectors on a drive. The good news is that it\u2019s almost always fixable with a few simple checks.<\/p>\n

                Start with the drive format and disk check, then move to the network, antivirus, or system file fixes. Once the issue is resolved, you should be able to copy your files normally again without any interruptions.<\/p>\n","protected":false},"excerpt":{"rendered":"

                If you\u2019re seeing the 0x8007003B error while copying files from your Windows 10 or 11 computer to another device or network drive, don\u2019t worry…<\/p>\n","protected":false},"author":1,"featured_media":4494,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-4631","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to"],"_links":{"self":[{"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/posts\/4631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/comments?post=4631"}],"version-history":[{"count":1,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/posts\/4631\/revisions"}],"predecessor-version":[{"id":4632,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/posts\/4631\/revisions\/4632"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/media\/4494"}],"wp:attachment":[{"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/media?parent=4631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/categories?post=4631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toolswift.com\/blog\/wp-json\/wp\/v2\/tags?post=4631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}