Welcometo the Microsoft Windows January 2024 security updates overview. It is the first Patch Day of the year for Microsoft. The company has addressed a total of 48 Step2: Install the Acrobat Reader latest version. Now, all you have to do is visit the official website of Adobe Acrobat Reader and click on the “ download” button. When the download is finished, you just have to open the installer and follow the steps indicated. Method 2. Disable protected view. Iuse Adobe Acrobat DC free version. Many old threads here, not all the same setup. I'm running Windows 10, fully updated and secure. First sign of a problem appeared a few days before I lost access. I noticed that when I opened up my old pdf (a foreign-language textbook for English-speakers) I was being asked for permission to Method1: Check With Another File Method 2: Run As Administrator Method 3: Delete Temporary Files Method 4: Disable Preview Pane Method 5: Change Admin Select"Open With" and then "Choose another app". Select "Adobe Acrobat Reader DC" from the list and check the box that says "Always use this app to open .pdf files". Click "OK". If the issue persists, you may want to check your browser settings to make sure that it is not set to open PDF files in the browser by default. Whentrying to open Excel, instances of Adobe Acrobat Readerr are appearing in task manager, but not opening Nor does Adobe Acrobat Reader open. We have, in our company, this issue on more than 100pc's, the only ones not affected are the Windows 11 test-pc's. 1Answer. The first problem has a workaround: In Preferences, Page Display, set Zoom to Fit Visible. Second problem is harder - you drag the Acrobat window to the second monitor and close it without maximizing. It will then open that pdf on that monitor. But it seems to be a per-pdf setting, i.e. you have to do it for every pdf, which is pretty Windows10 1809 (Build 17763.253) Adobe Acrobat 2017. Adobe Acrobat is up to date (no updates available). Unfortunately, extracting the file and then opening it is no solution. That works, of course. I closed and re-opened Windows explorer and found I could open any one of the pdf files, but on the second try to open a pdf file the YiznoUI.