Why is the game running strangely even after I’ve recovered my game data on the Steam Version/BOI Version (Windows)?

*The BOI Version is only available on the Japan Server.
*Unexpected errors may occur on systems that do not support MementoMori. Please check here for more information on the game’s system requirements.

If you do not see improvements in how the game is running after clicking “App Data Recovery” in the version of the game you are playing on Windows, or by clicking “ゲーム修復 (Game Recovery)” from the BOI Version’s launcher, you may be able to improve how smoothly the game runs by performing the following procedure.
In the event that there is no improvement even after performing the procedure below, please contact our support team.

Please make sure to perform an Account Link in-game before proceeding. Otherwise, you may risk losing your player data.

First, configure Windows File Explorer to show “Hidden items”.

• For Windows 11:
  1. Open File Explorer.
  2. Open the dropdown “View” menu and hover your cursor over the “Show” option.
  3. Move your cursor from “Show” to the side menu that appears.
  4. Check the menu option “Hidden items”.
• For Windows 10:
  1. Open File Explorer.
  2. Select the “View” tab.
  3. Check the box that says “Hidden items”.

For the Steam Version

• ⇒First, try ending the game, then deleting the folder below.
  1. Open the folder, “C:\Users\(Your username)\AppData\LocalLow\BankOfInnovation”.
  2. From the “BankOfInnovation” folder, delete only the “MementoMori-Steam” folder.
  3. Reopen MementoMori.
• ⇒If there is still no improvement, end the game again, and delete the following subkey from your Windows registry.
  1. Using the Windows key + R, open the “Run” box. Then, type “regedit” and click “OK” to open the Registry Editor.
  2. In the Registry Editor, open “Computer\HKEY_CURRENT_USER\Software\BankOfInnovation”.
  3. Right click “MementoMori-Steam” and delete it.
     *Be careful not to delete another subkey by mistake.
  4. Reopen MementoMori.

For the BOI Version (Windows)

• ⇒First, try ending the game, then deleting the folder below.
  1. Open the folder, “C:\Users\(Your username)\AppData\LocalLow\BankOfInnovation”.
  2. From the “BankOfInnovation” folder, delete only the “MementoMori-Windows” folder.
  3. Reopen MementoMori.
• ⇒If there is still no improvement, end the game again, and delete the following subkey from your Windows registry.
  1. Using the Windows key + R, open the “Run” box. Then, type “regedit” and click “OK” to open the Registry Editor.
  2. In the Registry Editor, open “Computer\HKEY_CURRENT_USER\Software\BankOfInnovation”.
  3. Right click “MementoMori-Windows” and delete it.
     *Be careful not to delete another subkey by mistake.
  4. Reopen MementoMori.
     *Deleting the subkey above also erases your Account Link, so please perform an Account Link again to log back in.