Prototype 2 Failed To Save Data Fix ❲2025❳

If Controlled folder access is toggled On , click Allow an app through Controlled folder access .

Most modern Windows systems block unauthorized applications from writing to the Documents folder. prototype 2 failed to save data fix

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]); If Controlled folder access is toggled On ,

For , the fix is running as administrator + disabling OneDrive on the Documents folder. If that fails, manually creating the save folder with full permissions solves it. The error is not a game-breaking bug—it’s a Windows permission issue with older games. If that fails, manually creating the save folder

Method 1: Configure Windows Controlled Folder Access (Most Common Fix)

Last updated: April 2026. Works for all versions of Prototype 2 on Windows 10/11, Steam Deck, and older OS.

Under the tab, check Run this program as an administrator .