## TL;DR

When calling Bing Web Search: pass mkt as language-country (en-US), never together with cc, they are mutually exclusive.

## Fix

1. When calling Bing Web Search: pass mkt as language-country (en-US), never together with cc, they are mutually exclusive.
   Expected: you can confirm this matches your situation.

## When to use

- You are setting up or using this Bing Web Search mkt parameter feature.
- The symptom matches: format, the cc conflict, and checking BingAPIs-Market.

## When NOT to use

- Unrelated Bing Web Search mkt parameter issues (different feature, different failure).
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported against Bing Web Search mkt parameter.

## Variant phrasings

### format, the cc conflict, and checking BingAPIs-Market

## Why it happens

Official docs (MicrosoftDocs bing-docs, query parameters reference): the market parameter gotchas. mkt is language-country like en-US. mkt and cc are mutually exclusive, do not send both. To see which market Bing actually used for a request, inspect the BingAPIs-Market response header. Keep offset below totalEstimatedMatches minus count, otherwise you page past the end.

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.