2 Failed To Save Data Fix __link__ - Prototype

Unlike modern titles utilizing cloud saves or the generic Saved Games folder, Prototype 2 attempts to create a save directory at the root of the user’s Documents folder, or in some installation configurations, within the game’s installation directory under Program Files .

Windows Defender’s “Controlled Folder Access” is a common silent killer of old games.

Windows may be blocking the game from writing to your Documents folder as a security measure.

Select , then scroll to Controlled folder access . Click Allow an app through Controlled folder access . prototype 2 failed to save data fix

7.1 Client: debounce and idempotency header (pseudo-code)

Click and ensure the administrator box is checked there as well. Whitelist via Windows Defender:

Check the box next to Run this program as an administrator . Unlike modern titles utilizing cloud saves or the

app.post('/records', async (req, res) => const key = req.header('Idempotency-Key'); const client = await db.connect(); try await client.query('BEGIN'); const existing = await client.query('SELECT record_id FROM idempotency WHERE key = $1', [key]); if (existing.rowCount) const record = await client.query('SELECT * FROM records WHERE id = $1', [existing.rows[0].record_id]); await client.query('COMMIT'); return res.status(200).json(record.rows[0]);

Prototype 2 relies on specific DirectX 9.0c DLLs (specifically d3dx9_42.dll or similar variants). Modern versions of Windows ship with DirectX 11 and 12. While these are backward compatible in terms of graphics rendering, they do not always retain the specific helper libraries required by older games for file handling and memory management. A missing or corrupted DirectX registry key can interrupt the process when the game attempts to compress and write save data.

Microsoft OneDrive automatically backs up the Windows Documents folder. Because Prototype 2 creates its save folder ( Activision/Prototype 2 ) inside Documents, OneDrive’s real-time syncing can lock the folder while the game is running, resulting in the "failed to save" error. How to resolve OneDrive conflicts: Select , then scroll to Controlled folder access

This is universally the first and most successful fix to try. The game creates a settings file ( profile.bin ) that can become corrupt. Deleting it forces the game to recreate a clean version.

Prototype 2, an action-adventure game developed by Radical Entertainment, allows players to explore an open world and upgrade their character's abilities. However, some players have reported that their game fails to save data, resulting in lost progress and frustration.