Issue Resolution:

Resolution:

1) Correct settings. Check by typing password in text editor (notepad).

2) Use “Forgot your password?” link to reset password.

3) Have your Sage 300 Online account administrator login to the User Management interface and Invite or Re-Invite your user.

Resolution for Issue 'Error: “Your sign in was unsuccessful. Please correct the errors and try again.”' available: Yes (Solved).
Source: Sage Community forums.
Disclaimer: Accounting File Repair Support is an independant provider of database-related services and is not affiliated with Sage or Intuit.

Error: “Your sign in was unsuccessful. Please correct the errors and try again.”: this issue or error code is a known issue related to Sage accounting products. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Sage issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If you are experiencing too many issues, you may want to transition from Sage 50 to Quickbooks. See also: convert from Sage 50 Quantum to Sage 50 Pro/Premium or export Sage. If it is a complex issue or you are unable to solve the issue, you may contact us by contacting Sage Repair or by using other support options.

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