These .spool files contain records of your in-game accomplishments. When you launch a game, the Ubisoft Connect client reads these files and updates your online profile.

The term "upd" in this context generally refers to an used to bypass the standard requirements for earning achievements in legacy Ubisoft titles. These tools are often shared on community forums like Steam Guides or GitHub to help players who have lost progress or want to reach 100% completion without repetitive grinding.

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The following steps are recommended to resolve the synchronization and update loop.

Go to C:\Program Files (x86)\Ubisoft and manually delete the folder if it remains.

Warning: Using third-party tools can violate Ubisoft’s Terms of Service and should be used with caution.

If the update (upd) component is corrupted, a fresh install is required.

If you search frequently, you may eventually need to reinstall the client.

Press Shift + F2 while in-game to open the Ubisoft Connect overlay.