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Why do I get the error message 537 during the update?

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Under certain circumstances an update of Avira Antivirus can fail with an error message.

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Click Report to verify if the type of error message is 537. If you find following error message at the end of the report, then a problem with the Internet connection occurred.

16:15:24 [UPD] [ERROR] Generation of update structure failed. UpdateLib delivers error 537.



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Error message 537 may occur due to various issues. Go through the following solutions one by one to solve the problem.

I. Windows system settings could not be detected
  1. Open the "Avira Control Center".
  2. Go to Extras → Configuration.
  3. Click PC Protection → Update → Proxy settings.
  4. Click the option Do not use a proxy server if you do not use a proxy.
  5. Click OK to apply the settings.

II. A security software with firewall is blocking the Avira update process update.exe

Check if you have another security software with a firewall installed on your computer. Open the Windows Start menu, to see the list of the installed software.
(Start → Settings → System → Apps & features)

If you can identify the security software with the firewall, you can generally see and modify the list of allowed and blocked applications in the firewall's settings. Make sure that none of Avira's program files are blocked, including sched.exe and update.exe


III. Do you use a proxy for the Internet access or a security software, which installed a local proxy?

Usually, most of the Internet surfers do not need to configure a proxy, to connect their computers to the Internet. If the computer is in a company network or if a security software installed a local proxy on it, to filter Internet data, then you also have to make these settings in the Avira software, to run Avira product updates.


Verify if there is a proxy set on your computer:

  1. Go to Start → Settings → Network & Internet &rarr Proxy.
  2. If the option Use a proxy server is active, write down the Address and Port.
  3. Click Save to close the configuration window.
  4. Open the “Avira Control Center”.
  5. Go to PC Protection → Update → Proxy settings.
  6. Enable the option Use this proxy server and insert the Address and Port you wrote down. Leave the other fields empty.

  • Affected products
  • Avira Free Antivirus
  • Avira Antivirus Pro
  • Avira Internet Security Suite
  • Avira Family Protection Suite
  • Avira Ultimate Protection Suite

Comments

Manual update of the Avira virus definition files
If you do not have Internet access to update your Antivirus, take the advantage and perform a manual update of your Avira virus definition files via the Avira Fusebundle Generator.

Note
The following instruction applies only to Avira products starting with version 2012.
It is also highly recommended to perform an Avira product upgrade to the latest Antivirus version.


Update process of the virus definition files (VDF)
Created the VDF Fusebundle archive

Use a computer with Internet access to download the current Avira Fusebundle Generator
Extract the downloaded file: avira_fusebundlegen-win32-en.zip
Open the extracted folder and double-click the file: fusebundle.exe
The Fusebundle archive (vdf_fusebundle.zip) is created. The creation of the archive may last up to a few minutes
Open the folder install and copy the new created vdf_fusebundle.zip file onto a data carrier (USB memory, CD-ROM, etc.). It is not necessary to extract the ZIP file

Updating the Antivirus
Connect the data carrier to the computer without internet access
Open the "Avira Control Center" via the Avira icon in the taskbar
Click in the menu bar Update → Manual update, select the vdf_fusebundle.zip file from the connected data carrier and click Open
Avira Antivirus updates automatically the latest virus definitions

Note

Version 2013
The Fusebundle archive was generated for the Avira version 2013 and requires no further change.

Version 2012
When using the Fusebundles for an Avira version 2012 on a 32-bit or 64-bit operating system, enter the parameter platform=win32 in the “fusebundle.conf“.

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