A step-by-step guide for mounting a WebDAV address as a real Windows local disk with ScsDrive. ScsDrive is a Windows 10 / 11 (64-bit) tool that mounts WebDAV, NAS and cloud storage as a real local disk (a drive letter). Official site: https://drive.scsoi.com/
Turn on WebDAV in your storage service if it is not enabled yet - on a Synology or QNAP NAS it is a package or control-panel setting, and on AList / OpenList or Nextcloud it is a setting inside the service. Copy the WebDAV URL and note the user name and password you will sign in with. Use an HTTPS address. If you are unsure about the path, test the URL first, because a wrong path is the most common reason a mount fails.
Start ScsDrive and add a new mount. Paste the WebDAV URL, enter the user name and the password, then save the mount. Choose either to remember the password or to connect without storing one, in which case Windows asks for the password when you open the drive.
Check the drive letter that belongs to the new mount and make sure it is a letter that is free on this PC - Z:, Y: and X: are usually free. Once the mount is created the drive shows up under 'This PC → Devices and drives' as a local disk with that letter, next to your internal disks.
In the mount's settings, enable auto-start so that ScsDrive starts with Windows, and enable reconnect on startup so the mount is re-established after a reboot or after the machine comes back from a network outage. Restart the PC once to confirm the drive comes back on its own.
Open the new drive in File Explorer and check that it is listed under 'This PC → Devices and drives' as a local disk. Copy a file into it and open it with an ordinary application: a program that only understands local paths should be able to work with the mounted drive without special configuration.
If Windows reports that the path could not be found, the URL is wrong rather than the password. Check for a missing or extra slash, a wrong port, or a folder that does not exist on the server, and re-create the mount with the corrected URL. If you get an authentication or access-denied message instead, the URL is probably right and the user name or password is wrong - re-enter the credentials and make sure the account is allowed to use WebDAV on that service.
Windows Credential Manager may already store a user name and password for the same host, sometimes left over from an earlier 'Map network drive' attempt. Windows then sends the stored credentials, and the mount fails or opens a different share. Open Control Panel → Credential Manager → Web Credentials, remove the entry for that host, and add the mount again with the account you want to use.
Opening a folder with a very large number of files over WebDAV is slower than on a local disk, because the folder listing has to travel over the network before File Explorer can show it. Mount a sub-folder instead of the whole share, and let a background indexer or backup tool walk the tree when the network is quiet. Actual read and write speed depends on the bandwidth and latency of your own storage service.
A mount belongs to the Windows session that created it. Services and scheduled tasks that run in Session 0 - the isolated system session - do not see the drive letter, so a backup agent or script started that way reports a missing path. Run the task in an interactive session, as the same user who owns the mount.
After the network path changes - for example when the PC switches from Wi-Fi to Ethernet - an existing mount can stop responding. Close the drive and open it again, or restart ScsDrive, to re-establish the session.
用 ScsDrive 把 WebDAV 地址挂成真实 Windows 本地磁盘的分步指南。ScsDrive 是一款 Windows 10 / 11（64 位）工具，把 WebDAV、NAS 与云存储挂载成真实本地磁盘（带盘符）。官网：https://drive.scsoi.com/
如果你的存储服务还没有开启 WebDAV，先把它打开——群晖与威联通 NAS 上是套件或控制面板里的设置项，AList / OpenList、Nextcloud 上是服务自身的设置项。复制 WebDAV 地址，并记下你要用来登录的账号与密码。地址请使用 HTTPS。不确定路径时可以先测试这个地址，因为路径写错是挂载失败最常见的原因。
启动 ScsDrive 并新建一个挂载。填入 WebDAV 地址、输入账号与密码，然后保存。你可以选择记住密码，也可以选择不保存密码——后者在打开这个盘时由 Windows 询问密码。
查看新建挂载对应的盘符，确认它在这台电脑上没有被占用——Z:、Y:、X: 通常是空闲的。挂载建立之后，这个盘会以本地磁盘的形式出现在「此电脑 → 设备和驱动器」下，与内置硬盘并列，并显示该盘符。
在挂载的设置里开启开机自启，让 ScsDrive 随 Windows 启动；同时开启启动时重连（reconnect on startup），这样重启之后、或机器从断网中恢复之后，挂载会自动重新建立。重启一次电脑，确认这个盘会自己回来。
在资源管理器里打开新建的盘，确认它以本地磁盘的形式列在「此电脑 → 设备和驱动器」下。往里面复制一个文件，再用普通应用打开它：只认本地路径的程序也应当能直接处理这个挂载盘，不需要做额外配置。
如果 Windows 提示找不到路径，问题在地址而不在密码。检查有没有多一个或少一个斜杠、端口是否写错、以及服务器上是否真的存在这个目录，然后用改好的地址重新建立挂载。如果提示的是身份验证失败或拒绝访问，那通常地址是对的、账号或密码不对——重新填写凭据，并确认该账号被允许在这个服务上使用 WebDAV。
Windows 凭据管理器里可能已经存着同一主机的账号密码，有些是之前用「映射网络驱动器」时留下的。Windows 会优先发送已保存的凭据，结果就是挂载失败、或者打开了另一个共享。打开「控制面板 → 凭据管理器 → Web 凭据」，删掉该主机对应的条目，再用你要用的账号重新添加挂载。
通过 WebDAV 打开一个文件数量极多的目录，会比在本地磁盘上慢，因为目录列表要先从网络上取回来，资源管理器才能显示出来。建议挂载子目录而不是整个共享，并让后台索引或备份工具在网络空闲时再遍历目录。实际读写速度取决于你自己所用存储服务的带宽与延迟。
挂载属于创建它的那个 Windows 会话。运行在 Session 0（隔离的系统会话）里的服务与计划任务看不到这个盘符，所以这样启动的备份代理或脚本会报路径不存在。请在交互式会话中、用拥有该挂载的同一个账号来运行任务。
网络路径变化之后——例如电脑从 Wi-Fi 切到有线网——已有的挂载可能不再响应。关闭这个盘再重新打开，或者重启 ScsDrive，即可重新建立会话。