This issue stems from communication failures between TallyPrime and your operating system.
Navigate to > Exclusions (or Exception settings). Choose Add an exclusion and select Folder . Select your entire TallyPrime installation folder .
Right-click your TallyPrime installation folder > > Security . Ensure "Authenticated Users" have Full Control enabled. Configuration Mismatch tally prime error application settings are lost
This method is the safest way to restore settings to their defaults.
Press Alt + Y (Data) > Data Path . Under Company Data Path , paste the exact folder path where your company data folders (e.g., 10000, 10001) are stored. Preventive Measures for the Future Select your entire TallyPrime installation folder
Use TallyPrime’s built-in backup feature or automated cloud backup tools to save your data and configuration folders daily.
Select your Windows user profile or from the group list. Check the box for Full Control under the "Allow" column. Click Apply and OK to save changes. 3. Recreate the Configuration File Configuration Mismatch This method is the safest way
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Fortunately, there are several solutions to the "Application Settings Are Lost" error in Tally Prime. Here are some steps you can take to resolve this error: