Adobe reader開啟檔案錯誤 : 處理註解或連結時出錯。字型指定的編碼(CMap)遺失。

 今天收到一個PDF檔，上面有被加上一些註解，在用最新版的Adobe reader開啟時，就會跳出"處理註解或連結時出錯。字型指定的編碼(CMap)遺失"的錯誤。

內文本身可以看，但註解的部份就無法顯示。

電腦本身除了有裝Adobe reader，也有裝字型包，裡面的註解也都是中文，所以一開始也不知為何會有錯誤。

最後就是把Adobe reader跟字型包重裝，就沒事了。

Error opening file with Adobe Reader: Error processing annotations or links. The specified font encoding (CMap) is missing.

Today I received a PDF file with some annotations added to it. When I tried to open it using the latest version of Adobe Reader, an error message popped up saying, "Error processing annotations or links. The specified font encoding (CMap) is missing."

The main content of the document was visible, but the annotations were not displayed. My computer had Adobe Reader installed, and I had also installed a font package that included Chinese annotations. Therefore, initially, I was unsure why this error occurred.

In the end, I resolved the issue by reinstalling Adobe Reader and the font package, and the problem was fixed.