Sage Advisor message history cannot be opened due to a missing or damaged file
The message means the stored history of Sage Advisor messages is unreadable, not that your company data itself is damaged.
The message reads: “The Sage Advisor message history cannot be opened due to a missing or damaged file.” Despite how it sounds, it does not mean your company file is corrupt. It means a small side file that stores the list of past Sage Advisor notifications cannot be read. Your books, transactions, and reports are usually untouched.
Sage Advisor is the feature that shows tips, alerts, and reminders while you work. It keeps a record of the messages it has already shown you so it does not repeat them. That record lives in its own file, separate from your accounting data. When that file is missing, renamed, or damaged, Sage 50 reports it with this message and moves on.
Is your data at risk?
Usually not. The Advisor history is a convenience file, not part of your ledger. In most cases the worst effect is that the message list starts fresh or the warning appears at startup. Your balances and transactions are not affected by this file.
That said, the same event that damaged this file can damage other files in the same folder. If Sage 50 has also been slow, crashing, or failing verification, treat the message as an early warning rather than an isolated nuisance.
What causes it?
Common triggers include an interrupted update or shutdown, a sync or backup utility locking files mid-write, antivirus quarantining a file it should not have, or a workstation losing its network connection to the data location. Moving the company folder by hand, instead of using Sage’s own relocation steps, can also leave the Advisor file behind or orphaned.
What can you try first?
Start with the safest step: make a fresh backup of your company data before changing anything. Then close Sage 50 completely and reopen it. In many cases the program rebuilds the missing history file on its own and the message stops appearing.
If it returns, check whether your antivirus or backup software recently quarantined or skipped files in the Sage data folder, and restore or exclude them. Restoring an earlier backup of the company, if you have one, can also bring back a healthy copy of the supporting files, though you lose anything entered since.
When the file needs professional attention
If the message comes alongside other symptoms, such as Sage failing to open the company, errors during backup, or reports that do not balance, the data folder needs a proper diagnosis. Repeated reinstalling rarely helps and can make recovery harder. Our engineers repair damaged Sage 50 and Simply Accounting databases directly, and we can tell you quickly whether the problem is confined to the Advisor file or points to wider damage.
If you would rather move the data somewhere safer, we also convert Sage 50 US, Sage 50 Canada, and Peachtree companies into QuickBooks, which sidesteps the damaged environment entirely.
The useful next step: take that backup now, then send us the file for a free evaluation. We will tell you what is damaged, what is recoverable, and what the repair would involve, with no obligation.