Issue

In SharePoint large files that are more than 50 megabytes (MB) open in read-only mode in Office or they fail to open in Adobe with an error that says "There was an error opening this document. The file size exceeds the limit allowed".

Resolution

To resolve this issue you need to adjust the FileSizeLimitInBytes. The value can be adjusted by setting the registry value at HKLM\SYSTEM\CurrentControlSet\Services\WebClient\Parameters

For more information please refer to the links below:

https://docs.microsoft.com/en-us/sharepoint/troubleshoot/administration/large-publisher-files-open-in-read-only-mode

https://docs.microsoft.com/en-us/iis/publish/using-webdav/using-the-webdav-redirector#webdav-redirector-registry-settings