救回一個孤立的 OST 檔案 Recover an orphaned OST file

你手上只剩一個 .ost 檔案：沒有 Exchange 帳戶、沒有郵件設定檔、沒有伺服器。Outlook 本身打不開它。這個工具把它轉成 .pst，之後 Outlook 就能正常開啟。

You have a .ost file and nothing else: no Exchange account, no mail profile, no server. Outlook itself will not open it. This tool converts it into a .pst, which Outlook opens normally.

為甚麼 Outlook 自己做不到 Why Outlook cannot do this itself

Outlook 的每一個內建方法，都要求 OST 已經掛在一個能運作的設定檔裡面。孤立的檔案掛不上去，所以每一個方法都在同一步失敗。

Every method built into Outlook needs the OST already mounted in a working profile. An orphaned file cannot be mounted, so every method fails at the same step.

孤立的 OST · 各方法結果An orphaned OST, method by method
方法Method	結果Result	原因Reason
Import / Export	NO	要先有設定檔Needs a profile first
AutoArchive	NO	要先有設定檔Needs a profile first
拖放Drag and drop	NO	要先有設定檔Needs a profile first
VBA 巨集VBA macro	NO	要先有設定檔Needs a profile first
ost2pst	YES	直接讀檔案本身Reads the file itself

怎樣拿到 How to get it

索取On request

這個頁面沒有下載連結。程式來自一個上游沒有授權條款的專案，公開派發它並不合適，所以檔案由 Herman 直接交給你——一條連結或一支 USB。檔案約 68 MB，電郵寄不了。

There is no download link on this page. The program comes from an upstream project that ships no licence, so publishing it openly would not be appropriate. Herman hands the file over directly instead, by link or on a USB stick. It is about 68 MB, which is too large to email.

寄信索取 · hello@hjc925.cloudAsk for it · hello@hjc925.cloud

把 OST2PST.exe 複製到那部電腦。不用安裝，整個工具就是這一個檔案。

Copy OST2PST.exe to the machine holding the file. Nothing to install; the whole tool is that one file.
執行它，選擇你的 .ost。然後指定 .pst 要存在哪裡。

Run it and choose your .ost. Then say where the .pst should be written.
用 Outlook 開啟產生的 .pst。檔案 → 開啟 → Outlook 資料檔。

Open the resulting .pst in Outlook. File → Open → Outlook Data File.

第一次執行，Windows 會攔住它 Windows will block it on first run

先講，不要事後才講Say this beforehand

程式沒有數碼簽署，所以第一次執行時 Windows 會彈出「Windows 已保護您的電腦」。任何未簽署的程式都會這樣，不代表檔案有問題。按「其他資訊」，再按「仍要執行」。

部分防毒軟件也會把它隔離：單一檔案的 .NET 程式啟動時會自行解壓，這個行為和自解壓惡意程式很像。被隔離的話，為這一個檔案加一條例外即可。

The program is not code-signed, so the first run shows "Windows protected your PC". Windows does this with any unsigned executable; it is not a sign that the file is wrong. Click More info, then Run anyway.

Some antivirus products also quarantine it. A single-file .NET program unpacks its own runtime at startup, and that resembles self-extracting malware closely enough to trip heuristics. If it is quarantined, add an exclusion for this one file.

要在執行之前講清楚這兩點。事後才講，安全警告聽起來就像在證實檔案不安全。

Say both of these before the file is run. Told afterwards, a security warning reads as confirmation that the file is unsafe.

開始之前 Before you start

需要 WindowsWindows only

這是一個 Windows 桌面程式。Mac、手機、平板都不能執行。

This is a Windows desktop program. It does not run on a Mac, a phone or a tablet.

先複製一份 OSTCopy the OST first

在副本上操作，原始檔案留著不要動。轉換出問題時，你還有退路。

Work on a copy and leave the original untouched. If a conversion goes wrong, you still have somewhere to go back to.

預留空間Leave room

產生的 .pst 大小和來源 .ost 相若，兩個檔案會同時存在。

The .pst is roughly the size of the .ost it came from, and both exist at once.