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ML12345
Participant
February 15, 2026
Answered

[Reader][Win7] 21208 update breaks Acrobat Reader, won't start, missing dll

Update 21208 of Acrobat Reader breaks the app, it won’t start on Windows 7.

It shows “This program couldn’t launch because the object api-ms-win-core-winrt-l1-1-0.dll is missing” or something along those lines.

...Please fix.

 

Acrobat Reader 32-bit, Win 7 SP1 64-bit

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    AnandSri
    AnandSriCorrect answer
    Legend
    March 3, 2026

    Hi All, ​@Surgeon100  ​@ninoupte7  ​@roann13  ​@Sparweb  ​@kuzink  ​@michelew99224210  ​@ilaria_5737  ​@ML12345  ​@h4z-dev  ​@phil.tas  ​@AaronFireWater  ​@bullet1979  ​@Louis96  ​@Latvian Video  ​@Rekadhashoul  ​@Ken3208612 

     

    Thanks for your cooperation and patience on this.

     

    The issue has been addressed with the latest build of Acrobat and Reader version 25.001.21265. Planned update, Mar 02, 2026. Check for any pending updates by navigating to Menu > Help> Check for Updates. Install the updates, restart the app and the machine, and try again as suggested by the Adobe employee.

     

    Let us know if you experience any issues.

    Regards,

    Anand Sri.

    256 replies

    BobtheCat
    Participating Frequently
    February 21, 2026

    Here is latest update on my trying to restore a usable Adobe Reader version on Windows 7.  On 21 Feb morning I did all the things shown in this thread:  (1) removed broken version 25.001.21xxx  (2) cleaned traces with AdobeCleaner (3) loaded 32-bit version 22.003.20282  (4)  disabled Reader updater in Computer Management and in Services (5) changed the Adobe updater registry key from “3” to “0” - this is supposed to absolutely disable downloading and installing Adobe updates, (6) tested.   Did this on 4 computers.  All worked fine…..until approximately noon.  Then they all broke …..  version 25.001.21223 downloaded and installed anyway.  Adobe does not even recognize and conform to its own settings, especially the registry setting that says “no updates”.  It appears that Adobe is bypassing the update settings by simply forcing a totally new version on the user.

    THIS IS INTOLERABLE.  Adobe has no business forcing updates/versions on users who do not want them, especially when the updates will no longer work.  The USER should be given the option whether or not to update, after the USER is told the consequences.  Adobe has no excuse to say “we no longer support Windows 7”… the users are NOT asking Adobe to “support” older Windows 7 versions….they are only asking that the working older versions be left alone.  If the user is happy with (or must use) these older versions ..  albeit with no further support .. they should be allowed to do so.  Microsoft no longer supports Windows 7 or 10, but even Microsoft does not force downloads on these users that disable the OS. 

    Suppose I took my 2012 Toyota in for service at a dealership, and the dealer disabled the vehicle because it does not have all the electronic convenience/safety stuff that the later models have.  Does the dealer have that right, or do I still have the option to continue using the vehicle.

    In this situation, Adobe could make the missing .dll available via download if that is all it would take to make the older versions function.  It is too risky to download this .dll for an unvetted source. 

    Many older users (and my wife and I are in this category) do not have the means to continually buy new computers, and most do not have the computer knowledge to adapt older computers.  My wife said she had no ideal what to do when this error message appeared...she was in tears.

    Adobe’s attitude is “WE know better than the USERS”.  If I look up the definition ARROGANT in Webster’s dictionary, I see the Adobe logo in the definition.  

    For now, I must try to use Sumatra-pdf - it appears to meet my needs.

     

     

     

     

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    leecher1337
    Participating Frequently
    February 21, 2026

    I tried to make sure to disable updates by:

    1. Removing and disabling the service
    2. removing the Task in the task scheduler (yeah, it’S sneaky, there is also a task that does updates)
    3. Renaming the updater process .exe just to be sure
    4. Also did the registry setting to prevent updates

    I posted my script that does this below. Currently, my Adobe Reader version stays and no updates so far, but maybe I’m just lucky and it finds a way to update itself the next days again..?
     

    It’s really frustrating that Adobe seems to still roll out am update that is already known to be broken.

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    Participating Frequently
    February 24, 2026

    Did all of that but after reboot the removed task reappeared and was set to enable! (registry Dword back to 3 from 0, updater back to enable in services etc.)

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    leecher1337
    Participating Frequently
    February 21, 2026

    I created a little batch script and instruction to fix it [insecure link removed], as I get dozens of error reports now so that I wanted to automate the crucial steps of the process, maybe it helps some of you.

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    A does B
    Participant
    February 21, 2026

    Hi, the link to your batch file seems to be dead. The instructions will do, though.

    OT: Like your favourite book 😀. Data Becker from 1994, isn’t it?

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    leecher1337
    Participating Frequently
    February 21, 2026

    Sorry, my bad, fixed.

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    A does B
    Participant
    February 21, 2026

    If you have to use Acrobat Reader, here’s a list of download links to older versions (offline installer, DE and US version).

    For private use, there are free tools that, in my experience, are faster and more flexible, for example SumatraPDF or PDF-XCange Editor (free version). At least they can help until Adobe has fixed the problem.

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    LittleBic
    Participant
    February 21, 2026

    Tried 3 of the fixes posted here, didn’t work so i installed PDFSuiteInstaller a free program and uninstalled the Acrobat reader

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    LittleBic
    Participant
    February 21, 2026

    If Adobe fixes it so it will work on 7 I will go back to it

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    Rico0314
    Participant
    February 21, 2026

    Having the same Issue since yesterday 😞 

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    PC_SHOP
    Participant
    February 21, 2026

    Same issue here, Acrobat Reader automatically uploaded the update tonight to my W7 PC and asked me to reboot.  Following the reboot the Adobe Reader is toast and I get pop up messages api-ms-win-core-winrt-l1-1-0.dll is missing as well as Error parsing C:\Windows\Microsoft.net\framework\v4.0.30319\config\machine.config  Parser returned error 0x80070005.  For some reason multiple attempts of going back to previous restore points fail (even in safe mode).  I need this fixed ASAP.

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    Edward Al
    Participant
    February 21, 2026

    Ditto.

     

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    BobtheCat
    Participating Frequently
    February 20, 2026

    Last night (2/19/2026):   1) deleted the broken version, 2) cleaned remnants with AcroCleaner, 3) loaded the 32-bit version
     https://ardownload2.adobe.com/pub/adobe/reader/win/AcrobatDC/2200320282/AcroRdrDC2200320282_en_US.exe

    and 4) used Computer Management and Systems and Services to disable automatic updates.  Adobe Reader worked, and the automatic updater was shown “disabled”. I was delighted, and came in this morning to fix 4 more computers in my office.

    As a side note, in this version of Reader there is NO Preference option to turn off automatic updates.

    BUT……….on the computer fixed last night:

    This morning, Reader is broken again, with the stupid “missing api-ms-win-core-winrt-l1-1-0.dll message.”  When I checked Computer Management and Services updater was again enabled. Disabling the updater does not seem permanent. 

    Using Firefox .pdf reader will open documents, but will not print them correctly.  This is a Firefox issue that I raised with them a couple of years ago.  They assured me it had been fixed - it has not been.

    There is a post from earlier today that “ The product team has identified the root cause and is working on a fix. We will provide an update soon after the fix is available with the public release. “  Perhaps it will be a version that permits the user to turn off automatic updates.

    I hope this is so - right now my office is without .pdf reading capability.

    Shame on Adobe for inflicting this on what appears to be a vast horde of users.  I feel the same about the unwanted and intrusive AI tool they have added.  I would be open to another .pdf reader, if I can find one that works (reads and prints) properly.

    Thanks to all who have contributed.

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    grand sud
    Participant
    February 20, 2026

    Idem pour moi que doit on faire svp merci

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    AaronFireWater
    Participating Frequently
    February 20, 2026

    From this thread it appears adobe is working on a fix and will post an announcement here. Its possible that they might be able to roll it out through the auto update service that runs independently of their PDF reader. I don’t know but if so then once they have a fix your software might update to a working versions. 
     

    in the mean time Sumatra PDF for viewing PDFs is working on our windows 7 machines and is a large functionality improvement thought it does not offer any robust features.  

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    Participating Frequently
    February 20, 2026

     

    Now I can't even open files with another editor and I get an error.VCRUNTIME140.dll (or VCRUNTIME140_1.dll) I can't work anymore. Please reply.
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    AaronFireWater
    Participating Frequently
    February 20, 2026

    Yikes, are you running legacy autodesk software like we are? That error you are having is from missing or corrupt MS Visual C++ library. The adobe issue is because they’re latest update is trying to use a dll file from this library that is not present or available for windows 7. This issue you are having does not, on its face, appear related to this issue directly. Its similar and its possible that Adobe is not the only reader editor who updated their software offering without realizing they were making a big mistake. Whats the other editor you are using? In the mean time try Sumatra or Foxit we have those working on our windows 7 machines and find Sumatra to be a HUGE improvement in speed and bug/error reduction from adobe so long as you don’t need to sign PDFs . 

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    Participating Frequently
    February 20, 2026
    Thanks for your reply. Today I'm having a bigger problem than the one I reported yesterday with Visual CC++. Yesterday I was able to use Only Office Editors instead of Adobe, but since today it too has crashed with a new error message: error.VCRUNTIME140.dll. This is a huge problem for me at work because I need to download copies from Acrobat of court rulings and judicial documents with digital signatures and Italian Ministry of Justice codes. No other methods are valid for the Italian state or for working as a lawyer. I’ m lawyer. So I'm asking for the error to be fixed as soon as possible.!!!
    Yesterday the error api-ms-win-core-winrt-l1-1-0.dll is missing appeared, like you today a new error appears error.VCRUNTIME140.dll
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    AnandSri
    Legend
    February 20, 2026

    Hi All,

     

    The product team has identified the root cause and is working on a fix. We will provide an update soon after the fix is available with the public release.

     

    Regards,

    Anand Sri.

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    AaronFireWater
    Participating Frequently
    February 20, 2026

    Thank you, We’ve been preventing computers from getting online to avoid the automatic update self destruction. In the mean time the ones that have we’ve pivoted from adobe products and depending on needs we’ve had no issues with compatibility of Sumatra PDF - if anyone needs just a reader without abiliy to sign this one integrates with windows 7 to allow preview in windows explorer and restored PDF function in our legacy software packages while running significantly faster that adobe reader - no more “out of memory” error or window display issues we has with Adobe. Where we need signing ability we have found Foxit reader works with windows 7 without issue and restored functionality in our legacy software.  Foxit is little smoother and faster than adobe reader was and like Sumatra does not experience the “out of memory” errors or display issues that plague adobe reader. Its interface is not as refined as Adobe but that's not a bad tradeoff for the significant functionality improvement. In the end, pushing us into trying Sumatra and Foxit are a huge win for us. The significant speed in opening and flipping through construction plan sets is a massive productivity boost.

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