October 21, 2026

Windows 10 Mapped Network Drive Disconnects After Restart: Keeping Shared Drives Ready

A shared folder on a NAS or another PC is mapped as drive Z. Every morning after starting the PC, it shows a red cross, or File Explorer asks for a password again. When a Windows 10 mapped YY PAUS network drive disconnects after restart, opening shared files becomes a small daily chore.

Mapped drives depend on two things being ready at sign-in: a working network connection and the correct saved credentials.

If Windows tries to reconnect before the Wi-Fi is up, or cannot find a stored password, it gives up and marks the drive as disconnected. Often clicking the drive brings it back, which shows the drive itself is fine.

A few settings make the reconnection reliable.

Possible Causes

Mapped drives fail to reconnect for these reasons:

• “Reconnect at sign-in” was not ticked when the drive was mapped.
• The username and password were not saved in Credential Manager.
• The network, especially Wi-Fi, was not ready when Windows tried to reconnect.
• The NAS or sharing PC was asleep or still starting up.

Fast Startup can also change the order in which network services start, making early reconnection less likely.

Quick Fixes to Try First

Remove the old mapping and create it again properly.

1. In File Explorer, right-click the mapped drive and choose Disconnect.
2. Open This PC and select Map network drive from the Computer tab.
3. Choose a drive letter and enter the path, such as \\NAS\Documents.
4. Tick “Reconnect at sign-in.” If the share uses different credentials from your Windows account, tick “Connect using different credentials” too.
5. Enter the username and password, tick “Remember my credentials,” and finish.

Restart the PC and check whether the drive connects without a red cross.

Advanced Steps for Stubborn Cases

If it still disconnects, make Windows wait for the network.

1. Open Control Panel > Credential Manager > Windows Credentials and confirm the server’s name is listed. Edit it if the password has changed.
2. Turn off Fast Startup in Power Options and test again.
3. On Pro editions, run gpedit.msc and enable “Always wait for the network at computer startup and logon” under Computer Configuration > Administrative Templates > System > Logon.
4. Set the NAS or sharing PC not to sleep during working hours.
5. Update the network adapter driver, especially on Wi-Fi laptops.

If the share is on a PC rather than a NAS, giving that PC a fixed IP address in the router and mapping by address can also make reconnection more dependable.

Protect Your Data First

Save network credentials only on computers you trust, since anyone using your Windows account can then open the share. Avoid enabling the old SMB1 protocol to make an elderly NAS connect. Update the NAS firmware instead.

Conclusion

A mapped drive that drops after each restart is usually trying to reconnect too early or without credentials. Remap it with reconnect and saved credentials, make Windows wait for the network, and keep the sharing device awake.