---
schema_version: "1"
id: 1079cd669ee9c8d6685f76dc0470dfc39206d87d3e21619c9c74548ced44c681
title: Tableau Server Pre-Flight Check
collection: tableau
version: next
locale: en-us
portal_url: https://docs.salesforce.com/tableau/next/en-us/server/server_preflight_check.md
canonical_url: https://help.tableau.com/v0.0/server/en-us/server_preflight_check.htm
source_site: help.tableau.com
content_type: documentation
content_hash: f721c05e2c42c9651cbf8891821fc14e4a97eb874f0994c3acc21b20f44af13a
description: Run the Tableau Server pre-flight check before upgrades.
---
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# Tableau Server Pre-Flight Check

Introduced in version 2020.3.0 of Tableau Server on Windows, the pre-flight check (PFC) does basic checks of key system configurations to help avoid common installation and upgrade problems.

- Install—During installation of Tableau Server on Windows, a check of permissions on the installation directory and the data directory are done. If this check determines that permissions aren't adequate for Tableau Server to run successfully, the installation will not fail, but any errors are logged to the Administration Controller log.
- Upgrade—During upgrade of Tableau Server on Windows, when you run the `upgrade-tsm.cmd` script, checks of permissions on the installation and data directories are done, along with verification that the ports necessary for specific services are available. Any permissions issues are logged to the `app-upgrade.log` but do not block the upgrade. Port conflicts stop the upgrade process before initialization starts, allowing you to correct the problem. Because this happens _before_ initialization of the new version, you can continue to use your existing version while you investigate the issue, then rerun the `upgrade-tsm` script.

## tsm pre-flight check commands

Two tsm commands gives you the ability to check permissions and ports before running an upgrade, and fix any issues:

`[tsm maintenance preflight-check permissions](https://help.tableau.com/v0.0/server/en-us/cli_maintenance_tsm.htm#tsmmaintenance_preflight_perms)`

`[tsm maintenance preflight-check ports](https://help.tableau.com/v0.0/server/en-us/cli_maintenance_tsm.htm#tsmmaintenance_preflight_ports)`