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bootstr.dll - Analyze and How to Fix Errors

★★★★★ Verified File (27.08.2026)

⚠️ Important Notice: Bootstrap DLL file essential for Windows application execution. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:32-bit (x86)Compatible with 32 and 64-bit Windows
File version10.0.19041.1
Antivirus scan✅ Clean No viruses detected.
Digital signature✅ Have signedFile have signature, it is original file.
Hash Integrity✅ MD5: VerifiedFile Hash protection is missing.
File size11.5 kb.11792 bytes.

Hashes:

MD5: 330329ea08e2a04f58f94ee1fca2fae4
SHA-1: 6fe48a4836f7dab883e8baf95c085ee647098053
SHA-256: 8e4ed8c30d1894dca4491347f35a52199b65db7c8aed98d120fce8d4af9ff888
SHA-512: e66f832c05f340275beec88eab73e51c9c4a8cc191178ef4d7be5505eb4c31d6c8c52a1e826dc12a651700167c8829e9f50b8994559cf683687395881e2c9dc6

Digital file signature bootstr.dll

Publisher: Microsoft Corporation
Issuer: Microsoft Windows Production PCA 2011
Encryption algorithm: SHA256
Time stamp: Dec 7 00:43:48 2019 GMT

✅ This file is compatible with 32-bit Windows and can run on ✅ 64-bit Windows (via the WOW64 subsystem).

To fix a bootstr.dll error without downloading anything from third-party websites, you need to repair the specific program or game that is causing the issue. This error typically happens when a game launcher (like Uplay, Ubisoft Connect, or specific game clients) has corrupted files.

?? Fix the Game Launcher

Most bootstr.dll errors are tied to Ubisoft games or specific application frameworks.

  • Open your game launcher: Launch Steam, Epic Games, or Ubisoft Connect.
  • Verify game files: Go to your game library, right-click the problematic game, select Properties (or Manage), and click Verify Integrity of Game Files.
  • Reinstall the launcher: If verifying files fails, uninstall the launcher via Windows Settings and install it again using the official setup file already on your PC or from the official source.

??? Run SFC and DISM Scans

Windows has built-in tools to repair missing or corrupted system files automatically.

  • Right-click the Start Menu and select Terminal (Admin) or Command Prompt (Admin).
  • Type sfc /scannow and press Enter.
  • Wait for the scan to finish and restart your computer.
  • If the error persists, open the Admin Command Prompt again, type DISM /Online /Cleanup-Image /RestoreHealth, and press Enter.

?? Reinstall Microsoft Visual C++ Redistributables

Games rely on these built-in Windows packages to run DLL files correctly.

  • Open the Control Panel and go to Programs and Features.
  • Look for Microsoft Visual C++ Redistributable packages.
  • Right-click each package (especially versions from 2015 to 2022) and select Change, then click Repair.

📊 Diagnostics Tool: Verify Your bootstr.dll File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ bootstr.dll 10.0.19041.1 64-bit (x64)
Similar files:
️facebootstrapadapter.dll | ️eosbootstrapper.exe | ️bootstrap.uno.dll | ️bootstr.dll.mui | ️mcewmdrmndbootstrap.dll
Microsoft Corporation