You've encountered error 0x8007007E, "The specified module could not be found," which can block Windows Update or Microsoft 365 due to missing or corrupted system files.

The Fix

Start with the automated tool. If it fails, proceed to the next method.

Method 1: Run the Windows Update Troubleshooter

This utility can fix common update service problems.

1. Open Settings (Windows + I).

2. Go to System > Troubleshoot > Other troubleshooters.

3. Find Windows Update and click Run.

4. Apply any fixes and restart.

If That Doesn't Work:

Method 2: Reset Windows Update Components

A corrupted update cache is a common cause. This stops services, clears the cache, and restarts them.

1. Open Command Prompt as Administrator.

2. Run these commands in order:

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

3. Restart and check for updates.

If That Doesn't Work:

Method 3: Repair Microsoft 365 Installation

For errors in Office apps, use Online Repair.

1. Go to Settings > Apps > Apps & features.

2. Find your Microsoft 365 installation and select Modify.

3. Choose Online Repair, then follow the prompts. Restart when done.

If That Doesn't Work:

Method 4: Scan and Repair System Files

Use DISM and SFC to fix Windows corruption.

1. Open an elevated Command Prompt.

2. Run these commands in order:

DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

3. Restart after both complete.

If That Doesn't Work:

Method 5: Disable Conflicting Software

Third-party antivirus, VPNs, or drivers can block modules.

1. Temporarily disable your antivirus and firewall from the system tray.

2. Uninstall non-essential VPN clients or recent driver updates via Settings > Apps.

3. Try the operation that caused the error again.

Verify

After applying a fix, test the original action. For Windows Update, go to Settings > Windows Update and click Check for updates. For Microsoft 365, launch an app like Outlook. If the operation succeeds, the issue is resolved. If the error persists, consider a repair upgrade using the Media Creation Tool, which reinstalls Windows while keeping your files and apps.