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HOW TO - Verify the Integrity of Installation Files

Authored by Caleb Scharf September 29th, 2021 2647 views 0 likes KB956098

Description

If your troubleshooting a stubborn issue with Ansys software, and have already re-installed the software once, it's possible the installation files used to install the software were either corrupted during the download or the extraction/unzip process.  While this isn't common, it can occur and is a necessary step to eliminate this as a potential cause.

Solution

Step #1 - Verify Installation Files Are Saved Locally

Installing Ansys from a network drive or over a VPN can cause problems with the extraction process, and or accessibility of the files depending on network conditions, and has been known to produce errors that go undetected at the time of the install.  

Step #2 - Verify Installation Files Are Not Corrupted

Occasionally, files can get corrupted during a download.  This process insures that did not occur. 

  1. Go to the download section of the Ansys Customer Portal.
  2. Browse to and hover the mouse of the download link to the files you downloaded
  3. Take note of the md5sum value:
    1. Machine generated alternative text: ISO Images ANSYS 2020 R2 ISO Windows x64 DVD lot 3 Size(bytes): 3999608832 md5sum: dd658b1fa99c5eea157df4d66758 File Name: ANSYS2020R2 WINX64 Diskl click on (?) for more information
    2. Open PowerShell‍ and run the following command, using the file path to your file name.
    3. CertUtil -hashfile "[YourFilePathAndName]" MD5
    4. Example:
      1. Machine generated alternative text: Windows PowerShell PS C:\Users\Ca1ebScharf> certutil 05 hash of C: IT ANSYS2020R2 WINX64 Diskl.iso: billdd658b1fa99c5eea157df4d66758 md5 Cert Utl PS C: as 1 e comman comp eted successfully.
    5. Compare the two md5sum hash values.  
    6. If they are not the same, delete the file you downloaded, re-download the file and repeat this process until they match.
    7. If you download multiple files, you will need to repeat this compare process for each file.

Step #3 - Verify Zip Files Were Extracted Successfully

While very rare, were have seen instances where the Windows extraction utility does not properly extract all files. If you downloaded a Zip file (vs an ISO file), install and use a free open source utility called 7Zip to unzip the files.

  1. Download and install 7zip.
  2. Right click the Ansys Zip file you downloaded  >  select 7-Zip, then select Extract to [x]Filename
  3. Browse to the extracted folder and follow HOW TO - Install Ansys Software‍.


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