What causes 250001 (08001)?

Incorrect account identifier in the connection string (wrong format or region suffix). Firewall or corporate network blocking outbound HTTPS (port 443) to *.snowflakecomputing.com. DNS resolution failure for the Snowflake account hostname. An expired or revoked network policy blocking the client IP address. Snowflake service outage in the account's cloud region

How do I fix 250001 (08001)?

Verify the account identifier format: . .snowflakecomputing.com (or - for newer accounts). Test DNS resolution: nslookup .snowflakecomputing.com. Test HTTPS connectivity: curl -v https:// .snowflakecomputing.com. Check Snowflake network policies: SHOW NETWORK POLICIES and verify the client IP is allowed. Check the Snowflake status page (status.snowflake.com) for active incidents

High severityconnection

Power BI Refresh Error:
250001 (08001)

What does this error mean?

The client (BI tool, ETL pipeline, or application) cannot establish a connection to the Snowflake service. This is a connectivity error — no SQL has been sent yet.

Common causes

1Incorrect account identifier in the connection string (wrong format or region suffix)
2Firewall or corporate network blocking outbound HTTPS (port 443) to *.snowflakecomputing.com
3DNS resolution failure for the Snowflake account hostname
4An expired or revoked network policy blocking the client IP address
5Snowflake service outage in the account's cloud region

How to fix it

1Verify the account identifier format: <account>.<region>.snowflakecomputing.com (or <orgname>-<accountname> for newer accounts)
2Test DNS resolution: nslookup <account>.snowflakecomputing.com
3Test HTTPS connectivity: curl -v https://<account>.snowflakecomputing.com
4Check Snowflake network policies: SHOW NETWORK POLICIES and verify the client IP is allowed
5Check the Snowflake status page (status.snowflake.com) for active incidents

Frequently asked questions

What is the correct Snowflake account identifier format?

Legacy format: <account_locator>.<cloud_region_id>.<cloud>. New format: <orgname>-<accountname>. Check in Snowsight under Admin > Accounts.

Can a Snowflake network policy block my pipeline?

Yes — Snowflake network policies can whitelist specific IP ranges. If your pipeline runs on IPs not in the policy, all connections will be blocked with error 250001.