WireMock

That suggests that you may have invalid copies of the jar files... it works for me. Where did you get the jar files from?

I downloaded them from maven central:
<https://repo1.maven.org/maven2/com/github/tomakehurst/wiremock-jre8-standalone/2.35.0/wiremock-jre8-standalone-2.35.0.jar>
<https://repo1.maven.org/maven2/org/wiremock/wiremock-webhooks-extension/2.35.0/wiremock-webhooks-extension-2.35.0.jar>

Then in the directory I had downloaded them to I ran:
```java -cp wiremock-jre8-standalone-2.35.0.jar:wiremock-webhooks-extension-2.35.0.jar   com.github.tomakehurst.wiremock.standalone.WireMockServerRunner --extensions org.wiremock.webhooks.Webhooks```
Started up fine.

Just check they are actually in the directory where you are running, and the files have the correct name as in the `-cp` argument; if I run that same command outside the directory, or with the wrong file name in the `-cp` I get the error you do.

looks strange, i have followed the exact step which you mentioned. but still hitting the same error. Will do further tries and let you know if i able to succeed.

Windows with java "java version "17.0.2" 2022-01-18 LTS"

OK, reproduced it - windows doesn't like the `-cp` with a colon in it I think...

Try a semicolon:
```java -cp wiremock-jre8-standalone-2.35.0.jar;wiremock-webhooks-extension-2.35.0.jar com.github.tomakehurst.wiremock.standalone.WireMockServerRunner --extensions org.wiremock.webhooks.Webhooks```

cool, works now. You saved my day. Thank you