Acrobat Reader

Hi,I am encountering an "Unsupported Algorithm" error when trying to sign documents with a NIST P-384 (EC) certificate via a PKCS#11 module, although RSA signatures work perfectly with the same setup. Since Adobe's official documentation states that Elliptic Curve cryptography is supported, but the signature cannot be created in this case, I would like to ask for your guidance on how to resolve this. Is there a specific configuration or a known compatibility issue in Acrobat Reader regarding hardware-based EC signatures that we should follow?Best Regards,Melis.

I added a password to an Adobe Acrobat document which works to open the document, as intended, but the same password will not allow me to edit or print (to PDF) the document. I only created this one password. So what's going on? Why is Acrobat not accepting the one and only password I created when it uses that password to OPEN the document but refuses the password for EDITING or PRINTING?

Hello, I am working for an enterprise working with Acrobat native desktop apps rather than browser-based tools. We have conditional access policies in place via Azure Conditional Access. The rules include device-aware granting and blocking, meaning that users must have a compliant device to be able to access the app after successful authentication. Unfortunately, the Acrobat desktop apps do not send any information about the client and thus, the access is refused. It all comes down to the Primary Refresh Token not being transmitted with the authentication request of the app. If the Adobe team used the MSAL library, this would solve this problem. Can you please have a look at this issue?

When I formally request an Adobe Acrobat Reader Distribution License I am met with a rejection notice for: “License Form can not be provided for the public emails.” Unfortunately, I do not currently possess a custom registered business domain. However, I plan to include Adobe Acrobat Reader on my Compact Disc (CD) products to help my customers view media from their CD(s). I plan to serve around 100 customers this year, until the end of 2026. I am respectfully requesting an Adobe Acrobat Reader Distribution License for the purpose(s) described above. Thank you in advance!

PDFs keep automatically opening after I download them. I changed settings in Chrome already. But when I tried to unclick the "Open PDFs automatically in Reader when they are downloaded in Chrome browser" in Adobe, it will not save!! I'm at a loss for what to do. I've uninstalled Adobe and reinstalled it already. 

After the last update to Acrobat I have been having issues opening any pdf files.  I get an error message stating the file is possibly corrupt.  These are a lot of files that I cannot download again or I created.  My system backs up regularly so the backup file states the same thing.All files were find a couple of months ago.  I need to know how to restore a file in Acrobat.

審査対象が、AI によって生成された可能性が高いと拒否された、決してAI形成はしては居ませんかなりの時間を掛けてPSで仕上げました

We use desktop PCs with multiple monitors (2 or 3) and Windows 11. Windows has a feature that it tries to remember on which monitor was app running last time it was closed, and when you open it again it will launch on that same monitor. But this feature doesn’t work properly with Adobe Reader, and since monday it’s kinda broken. Let me explainUser1: three monitors side by side, center is main. User opens some pdf that he never opened, it opens on center monitor. He moves the window to left monitor and closes it. He opens again the same pdf and it opens on the left monior. He closes it and opens different pdf that he never opened before. It opens on center monitor. He moves it to right monitor, closes it and openes again. It opens on right monitor. He closes it and opens previous pdf. It opens on left screen. User is annoyed 🙄.User2: two monitors, right one is main, left one is secondary, new Adobe UI. Users opens pdf from Outlook (classic) running on left monitor. Adobe Reader opens o

Hello everyone,for the past few weeks (possibly since the January Windows Update), we have been getting the following error message randomly when opening different PDFs:'The font ArialMT cannot be found or created'.It doesn't matter whether the PDF file is being opened on a network share or locally.Once the user clicks 'OK', the error disappears after reopening the same file.Affected users so far: 50 Windows 11 Pro 24H2 (26100.7623) Adobe Acrobat Reader Version 2025.001.21111 Continous ReleaseAny help would be appreciate Message displayed (german) 

This is not a question, but a suggestion. This product's version numbering scheme is very confusing and should be simplified. Currently, the version number is a code of YYYY.nnn.nnnn, where Y is the year and n is a number. Use case: It's not intuitive to ask someone to download version “YYYY.nnn.nnnn"  

I installed Acrobat Reader on a Windows 11 machine and am getting a view in which all tools are spread across the screen at different locations as shown in the first image below.Also, some tools are floating around. which I want to avoid.  I want to change the view back to old one I am used to as in second image below. How to get the view on the second imave on a Windows 11 machine. 

I use a new DELL laptop with WIN11, and after some dayes, adobe acrobat is opening only as admin and only if enhanced security/protected mode is offFirst, everything worked, but then, I do not know why, it does not react expept as a admin.With processMonitor, I could find no trace of the reader if I try to start it as a standard use,I tried all possible folder  and registry permission issues with ChatGPT, but nothing helped.Alos reinstalling even with the cleaner tool didn't change anything!

I have a number of documents with links to youtube videos. These had worked a few weeks ago, provided we exported the doc to a PDF rather than 'saved as'. Please can you advise how I make these links now work? Thanks....

Not a question, but a suggestion that this forum should be called exactly what the product is designated “Adobe Acrobat Reader”.

I noticed that the ability to delete pages is still a premium feature. That's ridiculous in 2026! Could you reconsider the FREE vs. PRO options? Many people have the Reader app, and basic tasks should be included, not just viewing.Years ago, I also requested a searchable settings menu. Nothing has changed. Sad.

Hello, I have been using windows 8 on my laptop, sometime adobe reader could not open bigger file which must be size above of 100mb. I have updated adobe reader regularly. I have been facing this problem from last one month. Thanks,Steven Lash San Diego 

Boa tarde, para cumprimento de exigência fiscal em Portugal, necessitamos que nos enviem:1. Certificado de Residência (convenção dupla tributação) da ADOBE SYSTEMS SOFTWARE, com numero fiscal IE 6364992H2. RFI devidamente preenchido pela ADOBE SYSTEMS SOFTWARE, tax number IE 6364992H, relativa a serviços prestados à Empresa portuguesa PROGELCONE S.A., com numero fiscal PT501306552 (modelo em anexo) https://info.portaldasfinancas.gov.pt/pt/apoio_contribuinte/modelos_formularios/convencoes_dupla_trib_internacional/Documents/RFI_21_uk.pdf . Obrigada

Hello, Since the latest update on 12 febrary 2026, we have some bug :  We receive calls for tenders via PDF forms, we fill in the required fields, and we accept the offer, which creates an email in the drafts folder of our Gmail account with the completed data, the address of the recipient of the offer, and the PDF attached to the email.But since the update, it no longer works, even though I have checked several settings:The default email application is GMAIL.The email address is configured in Acrobat in the messaging section.I tape next : Accrobat Reader waiting with this screen and open a new google web page.i have the latest version : With a computer on  Windows 11 25H2 Can you help me ? 

For many years I have had trouble free borrowing from Borrow Box.Having changed my computer and moved from Windows 10 to Windows 11 I have experienced difficulties.I can borrow a book, download it to the computer and so read it but the transfer to my e-reader via Adobe Digital Editions no longer functions.I have ensured that the edition of ADE is current, even dis-installing and installing again but on opening the app I am confronted with a blank page. The top line with "File Edit Reading Help" is all that appears, there is no list of books borrowed, "Help" indicates it is authorised to the computer but downloaded thumb print fails to open. Can you please advise as I have no further ideas

acrobat reader使用時、すべてのツールのメニューでいずれかを選択するとメニュー画面が消える症状が発生しました。添付の通りです。原因がわかる方いらっしゃいましたら教えていただきたいです。Macユーザーです。＊再起動は試しております。 

Since installing KB5074109 the WebBrowser component can no longer load PDF’s within applications utilising Windows WebBrowser component.Instead of displaying Adobe and the PDF in the browser a grey screen appears and the Adobe Acrobat Reader process is launched but appears to not do anything.Users are using the latest version of Adobe Acrobat Reader (2025.001.21111, although had a previous version when logged).As a work around we currently disable the add-in in Internet Options which provides users with a popup to Open or Save the PDF instead.I was monitoring threads https://community.adobe.com/t5/acrobat-discussions/issues-with-adobe-dc-reader-after-windows-11-update-kb5074109/td-p/15665887 and https://community.adobe.com/t5/acrobat-discussions/pdf-documents-not-loading-after-june-8th-on-64-bit-web-browser-control-web-app/td-p/12121363 (Although 4 years old had responses this week which included one saying it was being investigated by developers) but it appears since yesterday the com

Hey all, I'm trying to print a sewing pattern from acrobat reader, which has to be printed as tiles using the poster page sizing option. But when I go to print, the 'poster' button is greyed out and I can't click on it. I've got the latest version and everything and the file is specifically meant to be printed this way. Any advice?Thanks!

We have approximately 50 computers running Windows 7 that have encountered a critical issue since February 23, 2026. After Adobe Acrobat Reader automatically updated to version 25.001.21223, the application began displaying the following error message upon launch:“The program can't start because api-ms-win-core-winrt-l1-1-0.dll is missing from your computer. Try reinstalling the program to fix this problem.”In response, we uninstalled the software and downloaded the official installer (AcroRdrDC2500120630_MUI.exe) from the official website to perform a clean installation. However, after a few days, the application automatically updated again and the same error reoccurred.As a result, we have been forced to remove the software entirely and switch to alternative PDF readers. This situation has caused significant operational disruption and inconvenience.Could you please advise whether there is currently a definitive solution to this issue?

I can print a test page fine, but when I ask to print a pdf I just get blank pages.  Please help

Hi, I have an issue with the measuring tool in Adobe Reader.  I can correctly set the scale, but the measurement is incorrect in the display. For example, I have a drawing with scale 3/16 in = 1 ft.  I set the ration to 0.1875 in = 1ft, but it doesn't measure correctly, an area labeled 10 ft, 1 in on the drawing is calculated as 6.16 ft by Adobe.  Here is the scale: and here is a picture of the calculated measurement: I open the same drawing with another PDF viewer (Foxit Phantom PDF), and it works without issue - the same area is now measured correctly:   I am not sure if I am missing something, but I have tried this with multiple drawings, it happens with them all. Can anyone provide an idea about what I may be doing wrong, or is this a flaw in Reader?