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Colin5C70
Participant
January 5, 2021
Question

Adobe Acrobat Reader DC will not run after uninstalling Adobe Flash

  • January 5, 2021
  • 1 reply
  • 709 views

Adobe Acrobat Reader DC will not run after uninstalling Adobe Flash.

 

After uninstalling Adobe Flash, when I start Adobe Acrobat Reader DC I get the following error:
   Invalid Plugin Detected. Adobe Acrobat Reader DC will quit.

 

It sometimes takes 10 seconds or so for the rror to come up.

 

I tried re-installing Acrobat Reader DC, but had trouble here too. The regular installs from https://get.adobe.com failed with 'Install Failed', that's all it says.

 

I found I could install successfully using a full install file: AcroRdrDC2001320064_en_US.exe,
but I still get the 'Invalid Plugin Detected' error after install.

 

If I deleted or renamed the following plugins from the C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins directory that it would stop this error:
   EScript.api
   IA32.api

 

But now other things like 'Check for Updates' do not work.

 

Versions:

Installed Acrobat: C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
Version: 20.13.20064.405839
Creation Date: 2020/10/23
Creation Time: 9:42:24 AM
Locale: English (Australia)
OS Manufacturer: Microsoft Corporation
OS Name: Microsoft Windows 10
OS Version: 10.0.19042

 

Anyone can help?

This topic has been closed for replies.

1 reply

C
Colin5C70Author
Participant
January 12, 2021

Ok solved - not an Adobe problem, rather it was a Microsoft Windows one. I think uninstalling flash was just a co-incidence.

 

Running debug (WinDbg) showed that there was a problem with code verification for the .dll plug-in files. I discovered this was not just with Adobe but also for other install files. With debugger I get errors like:

*** WARNING - PE SIGNATURE VERIFICATION FAILED !!!
*** Filename: D:\software\Nvidia\460.89-desktop-win10-64bit-international-dch-whql\NVI2\NVI2.DLL
*** Error: 0x800B0001

 

I think my registry and/or certificate store had a problem but I was darned if I could fix it. Some .dll files load ok, and others do not.

 

Windows things I tried:

  unzipping the install and checking the individual files' digital signatures - all checked ok

  sfc /scannow - no problems

  sigverif - no problems

  checking the Windows event logs for code signing problems - no problems

  installing the signing certificates for the failing files - did not fix it

 

In the end I did a clean Windows re-install, and that fixed it. This is of course a complete cheat but solved my problems.

 

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