OUTLOOK很舊的信變亂碼 比較新的信正常

因為換新電腦，所以把舊電腦的PST檔一起移到新電腦上。

但 在查詢一些信件時發現一個怪事，大概在2013年以前的信件，全變成亂碼。之後的信件，卻都正常。

在舊電腦上是完成正常的，所以就在找另外兩台電腦來測試，測試後發現，同一個PST檔，在某些電腦上都有這個問題，在另一些電腦卻沒事，跟OUTLOOK或WINDOWS的版本都沒直接關係。

最後才發現，原來是OUTLOOK裡面的編碼設定造成的。

編碼如果改成BIG5，就沒有亂碼的問題，調成UTF8就有。

但還是跟使用者說，因為都是很舊的信才有影響，平常還是建議用UTF8，有需要查舊資料，才用BIG5。

Old emails in Outlook are displayed as garbled characters, while newer emails appear normal. 

Due to a computer upgrade, the PST file from the old computer was transferred to the new computer. However, upon checking some emails, a strange issue was discovered. Emails dated before approximately 2013 appeared as garbled characters, while those after that period appeared correctly.

The emails displayed correctly on the old computer, so additional testing was conducted on two other computers. It was found that the same PST file exhibited this issue on certain computers but not on others, regardless of the version of Outlook or Windows being used. Eventually, it was discovered that the encoding settings within Outlook were causing the problem.

Changing the encoding to BIG5 resolved the issue and prevented the garbled characters. However, it is still recommended to use UTF8 encoding for general use, as it is more widely supported. The BIG5 encoding should be used only when accessing old data that is affected by this issue.