Microsoft Ads: How to Block the Audience Network (2026 Strategy)

You launch a "Search" campaign. You check the report. 20% of your budget went to "Audience Ads" (Display banners on MSN). The conversion rate is terrible. Microsoft makes it very hard to turn this off. There is no simple checkbox.

In this "Mega-Authority" guide, we cover:

1. Method 1: The Bid Adjustment (deprecated but useful).
2. Method 2: The Website Exclusion List.
3. Method 3: IP Address Blocking.
4. The "Trap": Automated Extensions.

Part 1: The Website Exclusion List (The Best Way)

This is the only 100% reliable method in 2026.

1. Go to Tools -> Exclusion Lists.
2. Create a list called "Block Audience Network."
3. Add exactly these two domains:
   • msn.com
   • outlook.live.com
4. But wait, there's more. You should also add the entire "Partner Traffic" wildcard (if available in your region) or use a curated list of "20,000 bad placements."

Pro Tip: Add bing.com? NO! That blocks Search. Only exclude the display properties.

Part 2: The Bid Adjustment Hack

Go to Campaign Settings -> Advanced Settings -> Other settings -> Audience Ads.

• Set "Decrease by 100%".
• Warning: Microsoft sometimes ignores this for "High Intent" users. But do it anyway.
• Warning: Some new campaign types (PMax) disable this setting.

Part 3: IP Blocking

Bot traffic on the Audience Network is high. If you see huge spikes in traffic with 100% bounce rate:

1. Check your Server Logs for the IP range.
2. Go to Settings -> IP Exclusions.
3. Block the range.

• Common culprit: Data Centers in Virginia/Ireland (AWS bots).

Part 4: Syndicated Search Partners

This is different from Audience Network. "Syndicated Search" means Yahoo, AOL, and DuckDuckGo.

• Strategy: Do not turn this off globally. DuckDuckGo is high quality.
• Optimization: Run a "Publisher Report." Sort by CPA. Exclude only the specific domains that are failing (e.g., yahoo.com often converts poorly for B2B).

Part 5: Summary & Checklist

Your Action Plan:

1. Check your "Audience" delivery in yesterday's report.
2. Apply the -100% Bid Modifier to all Search Campaigns.
3. Create a "Website Exclusion List" with generic low-quality domains.
4. Monitor weekly. Microsoft often "resets" these settings during platform updates.

Guard your budget.