Fix_Office_Error_30174-45_Guide
                     Fix Microsoft Office Error Code 30174-45 (Office 365, 2010, 2013)
1. Understand the Error
This error typically arises due to:
- Corrupted Office installation files
- Conflicts with existing Office versions
- Network connectivity issues
- Insufficient system resources
- Antivirus or firewall interference
- Mismatched system architecture (32-bit vs. 64-bit)
Common messages include:
- 'Something went wrong. Error code 30174-45.'
- 'The Office is busy. There is a problem starting the Office installation.'
- 'Sorry, installation can't continue because no compatible Office products are detected.'
- 'We are sorry, but we can't verify the signature of files required to install your Office product.'
2. Preliminary Checks
- Ensure Stable Internet Connection
- Check System Requirements
- Disable Antivirus/Firewall Temporarily
3. Repair or Uninstall Existing Office Installation
Repair Office:
  1. Go to Control Panel > Programs > Programs and Features
  2. Select your Office installation
  3. Click 'Change', choose 'Repair', and follow prompts
Uninstall Office (if repair doesn't work):
  1. Use Microsoft Support and Recovery Assistant (SaRA)
  2. Download from Microsoft's official site
  3. Run the tool and follow the on-screen instructions
4. Perform a System File Check (SFC Scan)
- Open Command Prompt as administrator
- Run: sfc /scannow
- Let the scan finish and apply any recommended fixes
5. Use the Offline Installer
- Sign in at account.microsoft.com
- Go to Services & subscriptions
- Select Office product and click Install
- Choose 'Other options', select version and download
- Run the offline installer
6. Check for Windows Updates
- Go to Settings > Update & Security > Windows Update
- Click 'Check for updates' and install any found
7. Modify Proxy Settings
- Open Settings > Network & Internet > Proxy
- Disable any active proxy
- Retry the Office installation
8. Advanced: Registry Fix (For Advanced Users)
- Press Windows + R, type 'regedit', press Enter
- Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office
- Backup the registry before changes
- Delete subkeys for previous Office installs
- Close and restart the system
Note: Be cautious and always back up the registry first
Source
For more information, visit:
https://winchatsupport.com/office/microsoft-error-code-30174-45-in-office-365-2010-2013/