Q. Why I can't access shared folder on windows xp? access denied error message.
known problems for access denied errors while file/folder sharing in windows and resolutions:
Disable windows firewall service instead disabling on network card properties
Disable uncheck simple file sharing in windows explorer >> tools > folder options
Q. Your mailbox appears to be unavailable. Try to access it again in 10 seconds. If you see this error again, contact your helpdesk." when trying to log in.
If you had a powerfailure Start below services and make sure all Exchange services are started: It will also show mailbox database is "Unknown" in mounted column.:
Microsoft Exchange Information Store
Microsoft Exchange Replication
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