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How do I fix error message "installer file is damaged"?

New Here ,
Nov 16, 2014

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I have tried to download an application that uses Abode AIR.  I always receive the same error message "Sorry, an error has occurred. The application could not be installed because the installer file is damaged.  Try obtaining a new installer file from the application author."  I have installed, uninstalled and reinstalled Adobe AIR and keep getting the same error message.  Does anyone know how to fix this problem?

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How do I fix error message "installer file is damaged"?

New Here ,
Nov 16, 2014

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I have tried to download an application that uses Abode AIR.  I always receive the same error message "Sorry, an error has occurred. The application could not be installed because the installer file is damaged.  Try obtaining a new installer file from the application author."  I have installed, uninstalled and reinstalled Adobe AIR and keep getting the same error message.  Does anyone know how to fix this problem?

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New Here ,
Nov 30, 2014

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We are having the same problem.  Did you ever figure out how to fix it? 

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Community Beginner ,
Jan 21, 2015

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This usually indicates that the certificate used to sign the AIR install has expired.  Based on an archived discussion on this topic, you can search for SignatureTimeStamp in the signatures.xml file in the META-INF folder and, if it is not found, then the install has no signature time stamp and will not install after the certificate expires. 

I'm having the same problem, but searching for SignatureTimeStamp is found.  The search returns the following:

    <xades:SignatureTimeStamp>

So, it would appear that there is a Time Stamp for the Signature in my case so the install should not fail.   I would first check the above.  Since you cannot install the app, you can try to open up the installation file with the .air extension as a zip file and drill down until you find META-INF and then drill down to find signatures.xml.  Search for SignatureTimeStamp and see if it is found.

In the meantime, I was wondering if anyone else in this forum can explain why the install fails for me even though I can locate <xades: SignatureTimeStamp> in the signatures.xml file in the AIR install file.

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Community Beginner ,
Jan 21, 2015

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Found the problem.  The AIR package was installed using the "-tsa none" option which meant that no time stamp was applied to the signature.   Once removing this option from the ADT installer the AIR package could be installed even past the certificate expiration date.

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New Here ,
Jan 31, 2015

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Would you mind to give a bit more detail how to remove "-tsa none" option from the air package? The one I tried to install jump right into installation after I click it. No place to conduct any setup. Same time I might be look into the wrong place. So, just want to make sure. Thanks a lot in advance.

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New Here ,
Nov 23, 2017

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How exactly do you see the timestamp? I'm trying to install a Jigazo application (.exe) I copied this from a flash drive on an old computer with Windows XP. Then when I added it to my current computer (windows 10). I checked my adobe flash and reinstalled it.

Can you tell me how to check the timestamp please?

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Adobe Employee ,
Dec 12, 2017

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Hi,

Please download the latest version of Adobe AIR from get.adobe.com/air. Workaround is available for the above mentioned issue without changing the system date or repackaging the .air app. . Steps to use the workaround can be found on  Adobe AIR applications installation issue

Thanks!

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New Here ,
May 01, 2018

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this was it!

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New Here ,
May 01, 2018

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interesting this was a non-Adobe software.

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Adobe Employee ,
May 06, 2018

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Hi,

You were able to install the application by resetting your system date as the application's certificate is no more valid. We recommend you to contact the application developer to re-package the application with a new certificate.

Thanks!

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New Here ,
Jun 25, 2020

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Hi,

is there an easier way??? I am not a moron but it sounds a bit complicated. However, thank you and I will try it.

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Explorer ,
Oct 31, 2017

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One option that worked for me, was to set the system clock to a date on which the code certificate was valid, install, then reset the clock to the current date.

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Community Beginner ,
Nov 02, 2017

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general problem:

Timestamps that were issued before 08 / 2015 were issued by Thawte. The period of validity of these timestamps ended with 30.10.2017.

So all installations of older packages will fail.

This is really a big issue.

@Adobe: Workaround? (Of course you can set the system clock to 29.10.2017 - but that is no solution for our thousands of customers!)

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New Here ,
Nov 02, 2017

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Thanks for spotting the problem we just encountered, DaWo​.

I hope we find a good work-around for this, because recreating releases with a new Flex Builder setup has been a real pain for us.

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Community Beginner ,
Nov 09, 2017

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Thank you so much, imdfl​ and DaWo​! Setting the clock back for installation and then going back to the proper time worked for me. I was pulling my hair out looking at log files, installing previous versions, etc. Much appreciated.

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Community Beginner ,
Nov 08, 2017

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I am having the same issue with our adobe air installers.  Is there a way to resign the installers to change the timestamp without doing a whole new build?

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New Here ,
Nov 08, 2017

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We have around 100 applications having this problem and looking forward @Adobe for help!

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Community Beginner ,
Nov 08, 2017

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Similar problem here. We have stopped all delivery, work on new productions, but some hundred thousand applications are still around with customers.

@Adobe: It is a bad idea to check the "end date" of a timestamp! The timestamp's function is to keep the certificate valid. btw: There is no documentation saying that a timestamp itself will lose its validity - in many cases almost at the same time when the certificate period ends. Adobe must have seen the problem because current timestamps are issued until 2031 - out of reach for warranty claims.

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