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Troubleshooting Articles
Veeam for Microsoft 365 Invalid Serialized Stream, Unknown Opcode Found:4 error
A recent Microsoft change to the Serialized Property of Exchanges items have caused “Invalid ‘serialized stream, unknown opcode found: 4’” errors across Veeam for Microsoft 365 users. This issue has
Veeam How to Manually Updating Suspicious File List in Limited Network Environment
It isn’t uncommon to come across an environment that has limited to no access to the internet. This can be for many reasons such as security or regulations. In these
Veeam for Microsoft 365 What’s unsupported after the deprecation of basic authentication?
After Microsoft’s decision to deprecate basic authentication in favor of modern authentication, there are a few things that will change when switching from basic to modern. Below are items that
Veeam Backup for Microsoft 365 “objects types are unsupported in the modern app-only authentication mode”
After Microsoft’s deprecation of basic authentication, item’s that were excluded that aren’t supported in modern app-only authentication mode will raise a warning. The warning will specify, “Found # excluded objects.
Veeam for Microsoft 365 “Download request retry timeout exceeded” error
Recently we have begun seeing the “Failed to backup item: FILEPATH, Download request retry timeout exceeded” error appear in jobs backing up OneDrive. Recent changes on the Microsoft side have
Veeam Microsoft 365 XML document and Specific SharingMessage type not recognised errors
During early December we began noticing two errors pop up. The messages “There is an error in XML document” and “The specific type was not recognized: name: ‘SharingMessage’” were caused
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