Unable to preview or print PDF documents specifically in IE

[CAA3]

Within the last week, we lost the ability to open or print PDF documents from websites.  Receiving at 523:523 error code.  This is only happening when using IE11.  We are able to open successfully in Edge and Chrome.   Several of the portals we use recommend the use of IE in order to get all functionality.    Seems there might have been an update issue causing the inability to open/print PDF docs.   Anyone else experiencing this or have a suggestion on remedy?   We've reviewed settings and tried various approaches.    Suggestions (other than use one of the browsers that works)?

[John T Smith]

Please post the name of the Adobe program you use so a Moderator may move this message to that forum

[CAA3]

Adobe Reader

Adobe Acrobat 2017

[John T Smith]

>only happening when using IE11 - open successfully in Edge and Chrome

I read a message (a long time ago so I don't remember the details) but I think that Microsoft *locks* IE so only the addons that Microsoft approves may be used

If you have had a Windows update recently, that may be the cause of your problem

[CAA3]

Interesitng John.  Thank you, I will check into that.    These users are at differnt locations and are likely up-to-date with the Microsoft Updates.