The module "sapi.dll" failed to load

Question

Error when trying to register sapi.dll in my system.

Executed cmd in cmd prompt w/elevated perms: regsvr32 sapi.dll

Answer 1

Hi Anime Guy, 

Thanks for reaching out here in the Microsoft Q&A. I can understand the inconvenience this issue has caused you. To help resolve this issue, please follow the steps outlined below:

Method 1: Verify sapi.dll Exists

Open File Explorer > Go to:

• C:\Windows\System32\sapi.dll
• C:\Windows\SysWOW64\sapi.dll

If missing, skip to method 3.

Method 2: Register With Full Path

1 - Press Windows + R > Type control system

2 - Look for System type:

• If it says 64-bit Operating System, follow the 64-bit instructions.

For 64-bit DLLs:

C:\Windows\System32\regsvr32.exe sapi.dll

• If it says 32-bit Operating System, just use the default regsvr32.

For 32-bit DLLs on a 64-bit system:

C:\Windows\SysWoW64\regsvr32.exe sapi.dll

Method 3: Run System File Checker (SFC) & DISM

1 - Run System File Checker (SFC)
This detects and repairs missing system files:

Open Command Prompt (Admin) and run:

sfc /scannow

2 - Run DISM

In case SFC finds but can't fix corruption, run this:

DISM /Online /Cleanup-Image /RestoreHealth

Method 4: Reinstall Microsoft Speech Platform

1 - Download Microsoft Speech Platform Runtime

64-bit (x64) Download: Download Microsoft Speech Platform - Runtime (Version 11) from Official Microsoft Download Center

32-bit (x86) Download: Download Microsoft Speech Platform - Runtime Languages (Version 11) from Official Microsoft Download Center

2 - Install the Runtime

Run the downloaded .msi file.

Follow the installer prompts.

Click Finish.

If the answer is helpful, please click Accept Answer and kindly upvote it. If you have extra questions about this answer, please click Comment.

Best regards, 

Kim Nguyen - MSFT | Microsoft Q&A Support Specialist