Why am I seeing "Access to browser storage is blocked"?
How to fix the browser storage blocked error when starting SecureMailMerge.
What This Error Means
SecureMailMerge processes your campaign data locally in your browser to protect your privacy. This requires access to browser storage (IndexedDB). When this access is blocked, the add-in cannot start.
This is usually caused by browser privacy settings or third-party cookie restrictions. Follow the instructions below for your browser.
Brave
Locate the lion icon in the address bar (to the right of the URL) and click it to open the privacy menu.
Click the shield switch to turn it off for the current website. The window will refresh and you can start the add-in again.
Advanced option: if you wish to keep most of the shield on you can also switch the option “Block cross-site cookies” to “Allow all cookies”. Office addins are loaded on a different domain than the main Outlook client and there their use or browser storage is considered a cross-site cookie.
Chrome
Locate the “crossed out eye” icon in the address bar (to the right of the URL) and click it to open the third-party cookie menu.
Click the button “Allow cookies” to enable third party cookies. This will reload the page and you can restart the add-in.
Firefox
Locate the “shield” icon in the address bar (to the left of the URL) and click it to open the protection menu.
Switch the slider next to “Enhanced Tracking Protection is ON for this Site” to the off position. This will reload the page and you can restart the add-in.
Internet Explorer Edge
As far as we know no versions of Internet Explorer currently block access to storage for Office Addins. If you come across this error in this browser please send us information about the version of your browser to our help desk and we will try to replicate the issue and provide guidance in future.