File Size Limit for Attachments in Ticketing System

[NRichardson]

All, 

Is there a file size limit for attachments within the ticketing system of Lansweeper. I cannot find conclusive evidence on a specific number or how to manage how large attachments can be. Any advice would be appreciated. 

[Thibo]

Hi there,

The maximum attachment size when emailing the helpdesk is largely determined by the email server or provider tied to your helpdesk mailbox (e.g. Gmail, Outlook, Microsoft 365). For example:

• Gmail allows attachments up to 25MB
• Outlook/Exchange Online typically supports attachments up to 20MB–35MB

If you're sending a file that falls within these limits but it's still being rejected after it reaches the Lansweeper helpdesk, the issue may be linked to the web server limits configured in your Lansweeper installation.

To increase the allowed file size within Lansweeper, you can edit the following file on your web server:

C:\Program Files (x86)\Lansweeper\Website\web.config

Look for the maxRequestLength parameter and adjust its value. This controls the maximum upload size (in KB) that the web server will accept. The default is usually:

<httpRuntime maxRequestLength="201900" ... />

📌 Important: Always back up your web.config file before making any changes. Once edited and saved, restart the web service (IIS Express or IIS) and the Lansweeper Server service to apply the change.

Kind Regards

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