Microsoft 365 Configure Corporate Firewall Proxy Settings Error:

If your workflow is blocked, confirm the account and app context, then follow the ordered fixes below.

Problem Description: Activate Microsoft 365

I purchased MIcrosoft 365 about a week ago, And ws charged twice and further more I can't use it beyond February 26, which it says it will be expired. And when I try to reactivate it it asks me to sign in. It says No network connection. Please check your network connection and try again. But I had a network connection the whole time.

Quick Answer for Resolving Activation Problems

Resolve Microsoft 365 activation failures triggered by network connectivity errors by first verifying your internet connection stability and ensuring no local restrictions are interfering.

Likely Causes Behind Activation Problems

• The Microsoft account or license context may not match the purchase or device.

• Cached credentials, outdated builds, or damaged local components can trigger activation problems.

• A file-specific corruption or add-in conflict can mimic a broader application failure.

Recommended Solution: Transferring Microsoft 365 License Safely

When to use this: Apply these steps when the symptoms match and you can access the relevant Microsoft account or administrator.

1. Configure your corporate firewall or proxy settings to explicitly permit outbound traffic to essential activation endpoints, specifically officecdn.microsoft.com, activation.sls.microsoft.com, and login.microsoft.com.

2. Next, open Command Prompt with administrative privileges and sequentially execute the commands netsh int ip reset followed by netsh winsock reset, then immediately restart your device to restore network stack integrity.

3. Finally, navigate to Windows Update settings and install all pending system patches to guarantee full compatibility with current Microsoft activation servers.

Alternative Solutions for When Microsoft 365 Still Fails

1. Retry the Microsoft-side steps after restarting the app and device.

2. Test the same action in a private browser session or a new blank file to isolate account vs file issues.

3. Run Quick Repair, then Online Repair from Programs and Features if the app still fails.

4. Capture exact error text and screenshots before contacting Microsoft Support or your administrator.

Working with WPS Office: WPS Office for Local Document Work

WPS Office cannot replace Microsoft account, activation, or cloud fixes for this scenario. It remains one of the best free Microsoft Office-compatible alternatives for opening and editing local files.

1. Download and install WPS Office from the official website.

2. Open local Word, Excel, PowerPoint, or PDF files in the matching WPS app.

3. Save a working copy locally while Microsoft-side issues are resolved.

4. Return to Microsoft Office after the primary fix succeeds.

If you need a practical local workspace in the meantime, try WPS Office.

Prevention Tips for Safer Installation Habits

• Keep one primary Microsoft account for subscriptions and Office sign-in.

• Install updates for Office and Windows before retrying failed workflows.

• Back up important files before repair, reset, or reinstall actions.

• Buy Office from official channels and record the redemption account.

FAQs About Common Activation Problems Answers

Can WPS Office fix this activation problems issue directly? Only when the WPS steps match the formatting or file task. Account, activation, and cloud issues stay on the Microsoft side.

Should I reinstall Microsoft 365 before trying these steps? Not first. Confirm account, license, and the exact error before reinstalling.

What should I send to Microsoft Support? The affected account email, device type, Office version, exact error text, and screenshots with personal data hidden.