Remember, a PDF file can be damaged during transfer or by a malfunctioning program. Test this out by opening a different PDF file and ascertain that nothing is wrong with the Acrobat Reader program or your computer. In case a different PDF file opens then ask the sender to either resend you the same PDF file or resend it in a different file format. However, if the PDF cannot open issue re-appears across all the files you try to open on your computer, then there is something wrong with the program itself, resolve to these 4 methods to fix the issue.
Follow these steps to disable the protected mode at startup. Firstly, open Adobe Reader. Uncheck the Enable Protected Mode at Startup option. Lastly hit the Yes button to turn off Protected Mode. Next, go to the Menu bar and click the Help menu. Then scroll down and select the Check For Updates option. Adobe Reader tool will automatically check for available updates. Ensure you are connected to the internet for it to connect to the server during the search.
Repair the Adobe Acrobat Reader application There can be problem within the Adobe Acrobat Reader application and it can be repaired manually with the provided options in the interface. Open the Windows Run box press Windows and R alphabet keys together , type appwiz.
It will open the uninstaller within the Control Panel of your system. Choose the Adobe Acrobat Reader application name and click on Change option. From the next dialogue box, select the option Repair installation errors in the program. This option fixes missing or corrupt files, shortcuts, and registry entries and click Next.
Follow the instructions and wait for the repair process to complete. Reboot your system and then analyze the effect of this solution. Click on the Edit menu from the top and then select Preferences from the drop-down list. The Preferences dialog box will get opened. From the left panel, select the Security Enhanced category and then from the right panel, under the Enhanced Security section, unselect the checkbox saying Enable Enhanced Security.
Click OK. Close the application once and then try viewing your PDF file now. Adobe reader could not open pdf because it is not a supported file type or has been damaged. We recently added a user to our laptop and my account is now an administrator.
I have Windows 8. Called Adobe for help and they implied it has something to do with that, but unless I pay their fee, they can't help! This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Report abuse. Details required :. Cancel Submit. Kevin D Souza. I think what a lot of users are struggling within this thread needs to be resolved by an experienced IT support specialist and needs a decent explanation on what causes the issue in transfer because this is experience across multiple digital transportation methods.
Maybe a tech support level 3 instead of a 1, but I will leave that to Adobe to solve out their own level of support.
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