# Login Troubleshooting > Issues logging in? Read this doc ## "Network Error" in red text If you see `"Network Error"` in red text, that can be due to a VPN on your computer not being activated as expected. Some work VPNs will block Zenlytic if your work VPN is not activated. To fix this error, activate your VPN like you do to connect to other resources at your company. ## Username/password sign-in is missing If your workspace previously accepted username/password sign-in and that option is no longer available, your workspace may have been configured for SSO-only login. See [Enforce SSO-Only Login](/authentication-and-security/enforce-sso-only.md). Sign in via your configured SSO provider instead, or contact your workspace administrator. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.zenlytic.com/authentication-and-security/login_troubleshooting.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.