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Untrusted PDF file is taking time to open

New Here ,
Jan 28, 2020

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We are running the latest patched versions of the following

  • Windows 10 1809 OS Build 17763.914
  • Office 2016 Professional Plus 32 Bit 16.0.4266.1001
  • Adobe Acrobat Reader DC Version 2019.021.20058

 

The problem affects all documents that Windows decides have come from untrusted sources- eg files from Internet, email and even network drives. These files can be identified in file properties as below.

 

When a user tries to open an untrusted pdf, docx or xlsx files, Protected View should engage with standard office and acrobat security settings in place.

 

the user will experience a 5-10 minute delay in opening these documents, the application will freeze and will not open any document for this duration

 

 

We have managed to put a workaround in place disabling the Acrobat Secure app container using this reg key Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\"bEnableProtectedModeAppContainer"  = 0 (default is 1) and also by disabling the Protected View Features in Office as necessary to keep some users working but this is a significant compromise to our security profile and we need to revert those changes asap.

TOPICS
Crash or freeze

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Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Untrusted PDF file is taking time to open

New Here ,
Jan 28, 2020

Copy link to clipboard

Copied

We are running the latest patched versions of the following

  • Windows 10 1809 OS Build 17763.914
  • Office 2016 Professional Plus 32 Bit 16.0.4266.1001
  • Adobe Acrobat Reader DC Version 2019.021.20058

 

The problem affects all documents that Windows decides have come from untrusted sources- eg files from Internet, email and even network drives. These files can be identified in file properties as below.

 

When a user tries to open an untrusted pdf, docx or xlsx files, Protected View should engage with standard office and acrobat security settings in place.

 

the user will experience a 5-10 minute delay in opening these documents, the application will freeze and will not open any document for this duration

 

 

We have managed to put a workaround in place disabling the Acrobat Secure app container using this reg key Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\"bEnableProtectedModeAppContainer"  = 0 (default is 1) and also by disabling the Protected View Features in Office as necessary to keep some users working but this is a significant compromise to our security profile and we need to revert those changes asap.

TOPICS
Crash or freeze

Views

33

Likes

Translate

Translate

Report

Report
Community Guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
Jan 28, 2020 0

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