Adobe Reader Update Error 1521

| Posted on by

[German]Adobe has released a hotfix 21.001.20138 for its Adobe Reader and Acrobat DC. This update fixes a number of bugs, including installation error 1722, which I discussed here on the blog a few days ago.

Advertising
Adobe Reader Update Error 1521
  • The help desk software for IT. Track users' IT needs, easily, and with only the features you need.
  • The Adobe Remote Update Manager (or RUM) has been around for a good few years now, and offers a command line tool to run Adobe title updates. It runs on both macOS and Windows, and can work with a local Adobe Auto Update server. There are some limitations in what it can do: RUM will only work with updates to installed Adobe Apps.
  • Will NOT install the Adobe Reader and Acrobat Manager ('ARM') service. Will configure Reader to only check for updates manually with confirmation for install. However, upgrades to Adobe Reader via this package: Will NOT remove an existing desktop icon or add one when there isn't. Will NOT install the AdobeARM service.

Patch My PC Support. Re: Adobe Acrobat reader DC update failed. « Reply #3 on: July 01, 2021, 06:36:39 AM ». The folder is hidden by default so you might need to type the directory in to File Explorer address bar. If it really is missing, that will likely cause you significantly more issues down the road with more than just this Adobe software.

With the security updates from February 9, 2021, some Adobe Reader/Acrobat DC administrators ran into problems, because these updates could not be installed in all scenarios. The installation then failed with installation error 1722- I had pointed out this issue and a workaround in the blog post Adobe Reader/DC Update (Feb. 9, 2021) drops error 1722 in Windows.

Hotfix 21.001.20138 fixes bugs

German blog reader SKG1 had already pointed me to the update yesterday in this comment. This hotfix mitagates the installation issue with error 1722 mentioned above. In addition, other buts are also fixed. The list of changes show below can be found on the Adobe page for theOptional Update 21.001.20138, where the following changes are listed:

Viewer

  • 4324395: An error comes up on opening PDFs in Reader when trying to open from OneDrive’s Personal Vault Folder

Sandbox

See More Results

  • 4324448: Unable to Save PDF file to Citrix ShareFile drive
  • 4324392: Unable to save digitally signed PDF to Box drive when “Enable Protected Mode at startup (Preview)” is enabled

Browser

  • 4324403: Error “PDF browser plugin is missing, reinstall the application” shown on opening PDF in browser
  • 4324403: Hang on connecting to Global Protect tool with error “PDF browser plugin is missing, reinstall the application” shown in background

Printing

  • 4324342: “Choose Paper source by PDF page size” checkbox is not working while Protected Mode is enabled

Search

Update

Update Failed Error 1500.. - Adobe Support Community - 2612336

  • 4323902: Acrobat is not able to load associated index with a PDF file

Installer

  • 4323851: Getting Error 1722 while installing 32-bit Reader or on applying latest Reader patch

Fill & Sign

  • 4324424: Reader: Nothing happens on clicking “Save a copy” button after adding a signature through Fill and Sign on a Reader extended document

Editing

  • 4324400: Cell content from Excel app is getting copied as image to the Edit app

There are quite a few bugs that had to be corrected shortly after the release of the February 2021 update. The installation error is mentioned in the “Installer” section.

Note: A German reader reported, that suddenly some pdf thumbnails were no longer displayed to him. After installing Foxit, these thumbnails were immediately displayed again.

Cookies helps to fund this blog: Cookie settings
Advertising

Newsletter

Subscribe to our Threatpost Today newsletter

Join thousands of people who receive the latest breaking cybersecurity news every day.

The administrator of your personal data will be Threatpost, Inc., 500 Unicorn Park, Woburn, MA 01801. Detailed information on the processing of personal data can be found in the privacy policy. In addition, you will find them in the message confirming the subscription to the newsletter.

Infosec Insider Post

Infosec Insider content is written by a trusted community of Threatpost cybersecurity subject matter experts. Each contribution has a goal of bringing a unique voice to important cybersecurity topics. Content strives to be of the highest quality, objective and non-commercial.

Sponsored Content

Hi All, Thank You For Your Patience. We Have Released An Update For Acrobat And Reader DC(version 21.001.20138) That Contains The Fix. Please...

Sponsored Content is paid for by an advertiser. Sponsored content is written and edited by members of our sponsor community. This content creates an opportunity for a sponsor to provide insight and commentary from their point-of-view directly to the Threatpost audience. The Threatpost editorial team does not participate in the writing or editing of Sponsored Content.