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December 18, 2025
Answered

Adobe Acrobat updating fails, Windows 11, 64 bit

  • December 18, 2025
  • 1 reply
  • 323 views

When Acrobat tries to be updated there comes message, that updating failed. There comes erros message 1646. I tried to remove and reinstall Acrobat, but then came another error message: Adobe Acrobat (64 bit) previoius version can not be removed. Then came message installation interrupted. What should bbe done to solve the problem?

Correct answer creative explorer

@paavo_5282 wowza, your installation is definitely corrupted! You tried to uninstall, but it is giving you mondo issues? Use the Adobe Cleaner from Adobe's website to 'purge' dead small files. https://helpx.adobe.com/ca/creative-cloud/apps/troubleshoot/diagnostics-repair-tools/run-creative-cloud-cleaner-tool.html this tool will fix common issues, such as removing outdated Adobe software, cleaning corrupt files, and repairing host files for Adobe server connectivity. Just quit from Adobe Acrobat both from online and Creative Cloud Desktop app. Run the Cleaner tool, follow the instructions on the screen. For good measure, I would also remove the adobe preferences in your computer (if you are on a PC, may nay need to turn on show hidden files?!) And remove those Adob Acrobat preferences from your computer. Restart your computer so that it can create new preferences, and log back into Creative Cloud Desktop app. and download a brand new and fresh Acrobat (don't use the previous one, that might be corrupted!) and install th correct Windows 11 64 bit for your computer. 






1 reply

creative explorer
Community Expert
creative explorerCommunity ExpertCorrect answer
Community Expert
December 19, 2025

@paavo_5282 wowza, your installation is definitely corrupted! You tried to uninstall, but it is giving you mondo issues? Use the Adobe Cleaner from Adobe's website to 'purge' dead small files. https://helpx.adobe.com/ca/creative-cloud/apps/troubleshoot/diagnostics-repair-tools/run-creative-cloud-cleaner-tool.html this tool will fix common issues, such as removing outdated Adobe software, cleaning corrupt files, and repairing host files for Adobe server connectivity. Just quit from Adobe Acrobat both from online and Creative Cloud Desktop app. Run the Cleaner tool, follow the instructions on the screen. For good measure, I would also remove the adobe preferences in your computer (if you are on a PC, may nay need to turn on show hidden files?!) And remove those Adob Acrobat preferences from your computer. Restart your computer so that it can create new preferences, and log back into Creative Cloud Desktop app. and download a brand new and fresh Acrobat (don't use the previous one, that might be corrupted!) and install th correct Windows 11 64 bit for your computer. 






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