MW
Microsoft Windows Network Diagnostics
Windows network diagnostic tool
About this crawler
Microsoft Windows Network Diagnostics is a web crawler identified by the regular-expression pattern Microsoft Windows Network Diagnostics in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block Microsoft Windows Network Diagnostics traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Microsoft Windows Network Diagnostics
- Pattern
Microsoft Windows Network Diagnostics- Tags
- monitoring
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Microsoft Windows Network Diagnostics
Block this crawler
robots.txt — disallow Microsoft Windows Network Diagnostics:
User-agent: Microsoft Windows Network Diagnostics
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Microsoft Windows Network Diagnostics [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Microsoft Windows Network Diagnostics") {
return 403;
}
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