My Activity Didn't Upload

When you complete an activity, it normally uploads automatically to the Zwift dashboard as an industry-standard fit (.fit) file. However, if you experience internet issues while saving or are logged into Zwift on multiple devices at once, it can result in a partial save or malformed file instead. Keep in mind these things:

• All rides need to be 2.0 km (1.25 mi.) or longer and runs must be at least 0.8 km (.5 mi) to upload. This is to prevent shorter activities from clogging up activity feeds, while longer activities should upload normally.

• You're out of storage space on your device: If this is the case, try clearing up some space by removing unused programs or files.

• You're using a school or work computer: Switch to a personal computer instead and make sure you're running Zwift as an administrator; we only support standard setups at this time.

• There's a sync program (e.g., Dropbox, Microsoft OneDrive) syncing your Documents\Zwift folder: We recommend either excluding your Documents\Zwift folder from your sync program or temporarily closing these programs while Zwift is running to prevent conflicts.

• You're logged into Zwift on multiple devices:  We don’t recommend this. Logging into multiple devices with the same account—at the same time can cause a number of issues including: overall poor performance; forced log outs; and issues with your data from previous sessions being overwritten.

While technical limitations prevent us from uploading missing progress to your Zwift dashboard—progress that doesn't share to your connected services (like Strava) can be replaced with a copy of your local fit file.

Malformed File

If your local fit file is malformed, it may still be possible to salvage it through one of the following workarounds. Give these two a try:

1. Use a fit file modification service (like Fit File Tools), to correct the timestamps.

   fitfiletools.com is not an official Zwift site and is not directly affiliated with Zwift. Use the site is at your own risk.

2. Download the file directly from one third-party site and upload it to the other.

   If it uploaded successfully to one site (like Garmin Connect), but not another (like Strava), you may be able to download the file from one, and manually upload it to the other.

How to Prevent Partial Activities

We know sometimes you can't help your internet connection. In some cases when you've disconnected from the internet during an activity, you’ll see symptoms such as your rider or runner list empty out, and/or it will look like you're riding alone. If this happens, try to get your internet to reconnect before you end your activity.

If you're on WiFi, you can also try to strengthen your WiFi signal—either by moving your computer closer to your router—or using a range extender. Also, you may want to run an Ethernet cable to your computer instead.

Ride On.

-The Team at Zwift