0x87DE2713 appears when a game or app will not open, and the console cannot locate or verify it. It affects digital and disc games, and it is usually a licence check or service problem rather than a broken game. Microsoft publishes no dedicated support article for this code, so the steps below are the standard troubleshooting reported for it, in the order worth trying.
If the error follows one game after a reinstall, check that the game licence belongs to the signed-in account, especially on a console shared between accounts or after a subscription change. If every game fails to open, test the network connection, and if the network is healthy, a factory reset keeping games and apps is the last local step before contacting Xbox Support.
Does 0x87DE2713 mean my game is deleted? No. The game is still installed. The console cannot verify or locate it at launch, which is usually a service, account, or licence check problem.
Why does offline mode fix it? Offline mode skips the online licence check. If the game opens offline, the install itself is fine, and the fault is in the service or network path that performs the check.
Will removing my account delete my saves? No. Removing an account removes the local sign-in record only. Saves are kept separately and sync from the cloud when you sign back in.