Related read: Adobe Reader not working in Windows. Try opening your PDF file again. It should load normally. If it does not, you may use Edge or any other alternative free PDF Reader.

However, this default setting makes it difficult to open multiple PDF files in separate windows. You can change this setting within Acrobat and force PDF documents to open in new windows.

A PDF — which stands for Portable Document Format — is an open standard document file extension created by Adobe. It has gained popularity in recent years because of the ease of use it affords ...

No matter your operating system, knowing how to combine PDF files is a good skill. We'll teach you the best ways to do so for Windows, macOS, or via the web.